21014199732 has 24 divisors (see below), whose sum is σ = 51917435136. Its totient is φ = 6592690048.

The previous prime is 21014199719. The next prime is 21014199761. The reversal of 21014199732 is 23799141012.

It is a congruent number.

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, 51505188 + ... + 51505595.

It is an arithmetic number, because the mean of its divisors is an integer number (2163226464).

Almost surely, 2^21014199732 is an apocalyptic number.

It is an amenable number.

21014199732 is an abundant number, since it is smaller than the sum of its proper divisors (30903235404).

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

21014199732 is a wasteful number, since it uses less digits than its factorization.

21014199732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103010807 (or 103010805 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 39.

The spelling of 21014199732 in words is "twenty-one billion, fourteen million, one hundred ninety-nine thousand, seven hundred thirty-two".