252655145638 has 24 divisors (see below), whose sum is σ = 447066720144. Its totient is φ = 106755692400.

The previous prime is 252655145593. The next prime is 252655145657. The reversal of 252655145638 is 836541556252.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18148773 + ... + 18162688.

It is an arithmetic number, because the mean of its divisors is an integer number (18627780006).

Almost surely, 2^252655145638 is an apocalyptic number.

252655145638 is a deficient number, since it is larger than the sum of its proper divisors (194411574506).

252655145638 is a wasteful number, since it uses less digits than its factorization.

252655145638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36311548 (or 36311541 counting only the distinct ones).

The product of its digits is 8640000, while the sum is 52.

The spelling of 252655145638 in words is "two hundred fifty-two billion, six hundred fifty-five million, one hundred forty-five thousand, six hundred thirty-eight".