511402631142 has 32 divisors (see below), whose sum is σ = 1101510033120. Its totient is φ = 157350735360.

The previous prime is 511402631111. The next prime is 511402631143. The reversal of 511402631142 is 241136204115.

It is a super-2 number, since 2×511402631142² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (511402631143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5490334 + ... + 5582702.

It is an arithmetic number, because the mean of its divisors is an integer number (34422188535).

Almost surely, 2^511402631142 is an apocalyptic number.

511402631142 is an abundant number, since it is smaller than the sum of its proper divisors (590107401978).

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

511402631142 is a wasteful number, since it uses less digits than its factorization.

511402631142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163368.

The product of its (nonzero) digits is 5760, while the sum is 30.

Adding to 511402631142 its reverse (241136204115), we get a palindrome (752538835257).

The spelling of 511402631142 in words is "five hundred eleven billion, four hundred two million, six hundred thirty-one thousand, one hundred forty-two".