102088113664778 has 16 divisors (see below), whose sum is σ = 153146071334760. Its totient is φ = 51039423470016.

The previous prime is 102088113664769. The next prime is 102088113664811. The reversal of 102088113664778 is 877466311880201.

It can be written as a sum of positive squares in 4 ways, for example, as 88446444732409 + 13641668932369 = 9404597^2 + 3693463^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 102088113664778.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1502742500 + ... + 1502810432.

Almost surely, 2^{102088113664778} is an apocalyptic number.

102088113664778 is a deficient number, since it is larger than the sum of its proper divisors (51057957669982).

102088113664778 is a wasteful number, since it uses less digits than its factorization.

102088113664778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125081.

The product of its (nonzero) digits is 21676032, while the sum is 62.

The spelling of 102088113664778 in words is "one hundred two trillion, eighty-eight billion, one hundred thirteen million, six hundred sixty-four thousand, seven hundred seventy-eight".