202426256634 has 32 divisors (see below), whose sum is σ = 478643368320. Its totient is φ = 55841725632.

The previous prime is 202426256623. The next prime is 202426256687. The reversal of 202426256634 is 436652624202.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83096589 + ... + 83099024.

It is an arithmetic number, because the mean of its divisors is an integer number (14957605260).

Almost surely, 2^202426256634 is an apocalyptic number.

202426256634 is an abundant number, since it is smaller than the sum of its proper divisors (276217111686).

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

202426256634 is a wasteful number, since it uses less digits than its factorization.

202426256634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166195654.

The product of its (nonzero) digits is 829440, while the sum is 42.

The spelling of 202426256634 in words is "two hundred two billion, four hundred twenty-six million, two hundred fifty-six thousand, six hundred thirty-four".