385171308720 has 240 divisors, whose sum is σ = 1472481683712. Its totient is φ = 89315043840.

The previous prime is 385171308713. The next prime is 385171308757. The reversal of 385171308720 is 27803171583.

385171308720 is a `hidden beast` number, since 3 + 8 + 517 + 1 + 30 + 87 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

It is a super-2 number, since 2×385171308720² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 875074 + ... + 1239393.

Almost surely, 2^385171308720 is an apocalyptic number.

385171308720 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

385171308720 is an abundant number, since it is smaller than the sum of its proper divisors (1087310374992).

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

385171308720 is a wasteful number, since it uses less digits than its factorization.

385171308720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2114520 (or 2114511 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 45.

The spelling of 385171308720 in words is "three hundred eighty-five billion, one hundred seventy-one million, three hundred eight thousand, seven hundred twenty".