102641578028826 has 16 divisors (see below), whose sum is σ = 205283398514304. Its totient is φ = 34213818933504.

The previous prime is 102641578028819. The next prime is 102641578028831. The reversal of 102641578028826 is 628820875146201.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 102641578028826.

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, 4346695 + ... + 14972538.

It is an arithmetic number, because the mean of its divisors is an integer number (12830212407144).

Almost surely, 2^{102641578028826} is an apocalyptic number.

102641578028826 is an abundant number, since it is smaller than the sum of its proper divisors (102641820485478).

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

102641578028826 is a wasteful number, since it uses less digits than its factorization.

102641578028826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20204725.

The product of its (nonzero) digits is 20643840, while the sum is 60.

The spelling of 102641578028826 in words is "one hundred two trillion, six hundred forty-one billion, five hundred seventy-eight million, twenty-eight thousand, eight hundred twenty-six".