21627476536 has 16 divisors (see below), whose sum is σ = 40557983040. Its totient is φ = 10812014400.

The previous prime is 21627476419. The next prime is 21627476539. The reversal of 21627476536 is 63567472612.

It is a self number, because there is not a number n which added to its sum of digits gives 21627476536.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21627476539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161365 + ... + 263236.

It is an arithmetic number, because the mean of its divisors is an integer number (2534873940).

Almost surely, 2^21627476536 is an apocalyptic number.

It is an amenable number.

21627476536 is a deficient number, since it is larger than the sum of its proper divisors (18930506504).

21627476536 is a wasteful number, since it uses less digits than its factorization.

21627476536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430974 (or 430970 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 49.

The spelling of 21627476536 in words is "twenty-one billion, six hundred twenty-seven million, four hundred seventy-six thousand, five hundred thirty-six".