27964633620 has 96 divisors (see below), whose sum is σ = 97622009856. Its totient is φ = 5810832000.

The previous prime is 27964633607. The next prime is 27964633639. The reversal of 27964633620 is 2633646972.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 27964633620.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3021856 + ... + 3031095.

It is an arithmetic number, because the mean of its divisors is an integer number (1016895936).

Almost surely, 2^27964633620 is an apocalyptic number.

27964633620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27964633620 is an abundant number, since it is smaller than the sum of its proper divisors (69657376236).

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

27964633620 is a wasteful number, since it uses less digits than its factorization.

27964633620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6052981 (or 6052979 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 48.

The spelling of 27964633620 in words is "twenty-seven billion, nine hundred sixty-four million, six hundred thirty-three thousand, six hundred twenty".