102638752501391 has 16 divisors (see below), whose sum is σ = 106218567000000. Its totient is φ = 99110858016000.

The previous prime is 102638752501387. The next prime is 102638752501507. The reversal of 102638752501391 is 193105257836201.

It is a cyclic number.

It is not a de Polignac number, because 102638752501391 - 2² = 102638752501387 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102638752501991) 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, 8286485 + ... + 16551233.

It is an arithmetic number, because the mean of its divisors is an integer number (6638660437500).

Almost surely, 2^{102638752501391} is an apocalyptic number.

102638752501391 is a deficient number, since it is larger than the sum of its proper divisors (3579814498609).

102638752501391 is a wasteful number, since it uses less digits than its factorization.

102638752501391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8267890.

The product of its (nonzero) digits is 2721600, while the sum is 53.

The spelling of 102638752501391 in words is "one hundred two trillion, six hundred thirty-eight billion, seven hundred fifty-two million, five hundred one thousand, three hundred ninety-one".