102102432311025 has 24 divisors (see below), whose sum is σ = 187565949728160. Its totient is φ = 54454630565520.

The previous prime is 102102432311017. The next prime is 102102432311069. The reversal of 102102432311025 is 520113234201201.

It is a happy number.

102102432311025 is a `hidden beast` number, since 1 + 0 + 210 + 2 + 432 + 3 + 1 + 10 + 2 + 5 = 666.

It is not a de Polignac number, because 102102432311025 - 2³ = 102102432311017 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 102102432311025.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 75631430667 + ... + 75631432016.

It is an arithmetic number, because the mean of its divisors is an integer number (7815247905340).

Almost surely, 2^{102102432311025} is an apocalyptic number.

102102432311025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

102102432311025 is a deficient number, since it is larger than the sum of its proper divisors (85463517417135).

102102432311025 is a wasteful number, since it uses less digits than its factorization.

102102432311025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151262862702 (or 151262862691 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

Adding to 102102432311025 its reverse (520113234201201), we get a palindrome (622215666512226).

The spelling of 102102432311025 in words is "one hundred two trillion, one hundred two billion, four hundred thirty-two million, three hundred eleven thousand, twenty-five".