21601677267532 has 12 divisors (see below), whose sum is σ = 38156233678920. Its totient is φ = 10699896216416.

The previous prime is 21601677267523. The next prime is 21601677267601. The reversal of 21601677267532 is 23576277610612.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25235603857 + ... + 25235604712.

It is an arithmetic number, because the mean of its divisors is an integer number (3179686139910).

Almost surely, 2^{21601677267532} is an apocalyptic number.

It is an amenable number.

21601677267532 is a deficient number, since it is larger than the sum of its proper divisors (16554556411388).

21601677267532 is a wasteful number, since it uses less digits than its factorization.

21601677267532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50471208680 (or 50471208678 counting only the distinct ones).

The product of its (nonzero) digits is 8890560, while the sum is 55.

The spelling of 21601677267532 in words is "twenty-one trillion, six hundred one billion, six hundred seventy-seven million, two hundred sixty-seven thousand, five hundred thirty-two".