864620550400 has 108 divisors (see below), whose sum is σ = 2176344298800. Its totient is φ = 339986237440.

The previous prime is 864620550347. The next prime is 864620550403. The reversal of 864620550400 is 4055026468.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (864620550403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 767290 + ... + 1522489.

It is an arithmetic number, because the mean of its divisors is an integer number (20151336100).

Almost surely, 2^864620550400 is an apocalyptic number.

864620550400 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

864620550400 is an abundant number, since it is smaller than the sum of its proper divisors (1311723748400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

864620550400 is a wasteful number, since it uses less digits than its factorization.

864620550400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2289864 (or 2289845 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 40.

Adding to 864620550400 its reverse (4055026468), we get a palindrome (868675576868).

The spelling of 864620550400 in words is "eight hundred sixty-four billion, six hundred twenty million, five hundred fifty thousand, four hundred".