102635642443512 has 32 divisors (see below), whose sum is σ = 258859806169680. Its totient is φ = 33909120806400.

The previous prime is 102635642443489. The next prime is 102635642443531. The reversal of 102635642443512 is 215344246536201.

It is a super-2 number, since 2×102635642443512² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18922497739 + ... + 18922503162.

Almost surely, 2^{102635642443512} is an apocalyptic number.

102635642443512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

102635642443512 is an abundant number, since it is smaller than the sum of its proper divisors (156224163726168).

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

102635642443512 is a wasteful number, since it uses less digits than its factorization.

102635642443512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37845001023 (or 37845001019 counting only the distinct ones).

The product of its (nonzero) digits is 4147200, while the sum is 48.

Adding to 102635642443512 its reverse (215344246536201), we get a palindrome (317979888979713).

The spelling of 102635642443512 in words is "one hundred two trillion, six hundred thirty-five billion, six hundred forty-two million, four hundred forty-three thousand, five hundred twelve".