201665252626632 has 80 divisors (see below), whose sum is σ = 565626395093760. Its totient is φ = 67129286137056.

The previous prime is 201665252626573. The next prime is 201665252626637. The reversal of 201665252626632 is 236626252566102.

201665252626632 is a `hidden beast` number, since 2 + 0 + 1 + 6 + 6 + 5 + 2 + 5 + 2 + 626 + 6 + 3 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (201665252626637) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 213567288 + ... + 214509479.

It is an arithmetic number, because the mean of its divisors is an integer number (7070329938672).

Almost surely, 2^{201665252626632} is an apocalyptic number.

It is an amenable number.

201665252626632 is an abundant number, since it is smaller than the sum of its proper divisors (363961142467128).

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

201665252626632 is a wasteful number, since it uses less digits than its factorization.

201665252626632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428077512 (or 428077499 counting only the distinct ones).

The product of its (nonzero) digits is 18662400, while the sum is 54.

The spelling of 201665252626632 in words is "two hundred one trillion, six hundred sixty-five billion, two hundred fifty-two million, six hundred twenty-six thousand, six hundred thirty-two".