402255266895438 has 32 divisors (see below), whose sum is σ = 923839847418240. Its totient is φ = 115479980926560.

The previous prime is 402255266895323. The next prime is 402255266895467. The reversal of 402255266895438 is 834598662552204.

It is a happy number.

It is a congruent number.

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, 160388861145 + ... + 160388863652.

It is an arithmetic number, because the mean of its divisors is an integer number (28869995231820).

Almost surely, 2^{402255266895438} is an apocalyptic number.

402255266895438 is an abundant number, since it is smaller than the sum of its proper divisors (521584580522802).

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

402255266895438 is a wasteful number, since it uses less digits than its factorization.

402255266895438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320777724832.

The product of its (nonzero) digits is 995328000, while the sum is 69.

The spelling of 402255266895438 in words is "four hundred two trillion, two hundred fifty-five billion, two hundred sixty-six million, eight hundred ninety-five thousand, four hundred thirty-eight".