102188235779238 has 16 divisors (see below), whose sum is σ = 233573110352640. Its totient is φ = 29196638794056.

The previous prime is 102188235779209. The next prime is 102188235779261. The reversal of 102188235779238 is 832977532881201.

It is a congruent number.

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, 1216526616378 + ... + 1216526616461.

It is an arithmetic number, because the mean of its divisors is an integer number (14598319397040).

Almost surely, 2^{102188235779238} is an apocalyptic number.

102188235779238 is an abundant number, since it is smaller than the sum of its proper divisors (131384874573402).

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

102188235779238 is a wasteful number, since it uses less digits than its factorization.

102188235779238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2433053232851.

The product of its (nonzero) digits is 81285120, while the sum is 66.

The spelling of 102188235779238 in words is "one hundred two trillion, one hundred eighty-eight billion, two hundred thirty-five million, seven hundred seventy-nine thousand, two hundred thirty-eight".