102521621145772 has 12 divisors (see below), whose sum is σ = 179490471308176. Its totient is φ = 51238629343440.

The previous prime is 102521621145763. The next prime is 102521621145773. The reversal of 102521621145772 is 277541126125201.

It is not an unprimeable number, because it can be changed into a prime (102521621145773) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5545296963 + ... + 5545315450.

Almost surely, 2^{102521621145772} is an apocalyptic number.

It is an amenable number.

102521621145772 is a deficient number, since it is larger than the sum of its proper divisors (76968850162404).

102521621145772 is a wasteful number, since it uses less digits than its factorization.

102521621145772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11090614728 (or 11090614726 counting only the distinct ones).

The product of its (nonzero) digits is 470400, while the sum is 46.

The spelling of 102521621145772 in words is "one hundred two trillion, five hundred twenty-one billion, six hundred twenty-one million, one hundred forty-five thousand, seven hundred seventy-two".