21739130432876 has 24 divisors (see below), whose sum is σ = 38157945443520. Its totient is φ = 10836877087872.

The previous prime is 21739130432839. The next prime is 21739130432917. The reversal of 21739130432876 is 67823403193712.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3090680 + ... + 7282208.

It is an arithmetic number, because the mean of its divisors is an integer number (1589914393480).

Almost surely, 2^{21739130432876} is an apocalyptic number.

It is an amenable number.

21739130432876 is a deficient number, since it is larger than the sum of its proper divisors (16418815010644).

21739130432876 is a wasteful number, since it uses less digits than its factorization.

21739130432876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4195433 (or 4195431 counting only the distinct ones).

The product of its (nonzero) digits is 9144576, while the sum is 56.

The spelling of 21739130432876 in words is "twenty-one trillion, seven hundred thirty-nine billion, one hundred thirty million, four hundred thirty-two thousand, eight hundred seventy-six".