102156442547664 has 20 divisors (see below), whose sum is σ = 263904143248256. Its totient is φ = 34052147515872.

The previous prime is 102156442547611. The next prime is 102156442547669. The reversal of 102156442547664 is 466745244651201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102156442547669) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1064129609824 + ... + 1064129609919.

Almost surely, 2^{102156442547664} is an apocalyptic number.

It is an amenable number.

102156442547664 is an abundant number, since it is smaller than the sum of its proper divisors (161747700700592).

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

102156442547664 is a wasteful number, since it uses less digits than its factorization.

102156442547664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2128259219754 (or 2128259219748 counting only the distinct ones).

The product of its (nonzero) digits is 38707200, while the sum is 57.

The spelling of 102156442547664 in words is "one hundred two trillion, one hundred fifty-six billion, four hundred forty-two million, five hundred forty-seven thousand, six hundred sixty-four".