102642657204 has 96 divisors (see below), whose sum is σ = 258565708800. Its totient is φ = 31584695040.

The previous prime is 102642657203. The next prime is 102642657269. The reversal of 102642657204 is 402756246201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102642657203) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8285487 + ... + 8297865.

It is an arithmetic number, because the mean of its divisors is an integer number (2693392800).

Almost surely, 2^102642657204 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102642657204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129282854400).

102642657204 is an abundant number, since it is smaller than the sum of its proper divisors (155923051596).

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

102642657204 is a wasteful number, since it uses less digits than its factorization.

102642657204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13333 (or 13331 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 39.

The spelling of 102642657204 in words is "one hundred two billion, six hundred forty-two million, six hundred fifty-seven thousand, two hundred four".