32000052000021 has 64 divisors (see below), whose sum is σ = 51710617190400. Its totient is φ = 17194402008000.

The previous prime is 32000052000013. The next prime is 32000052000053. The reversal of 32000052000021 is 12000025000023.

32000052000021 is a nontrivial binomial coefficient, being equal to C(8000007, 2).

It is not a de Polignac number, because 32000052000021 - 2³ = 32000052000013 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32000052008021) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 227929996 + ... + 228070346.

It is an arithmetic number, because the mean of its divisors is an integer number (807978393600).

Almost surely, 2^{32000052000021} is an apocalyptic number.

32000052000021 is the 8000006-th triangular number.

It is an amenable number.

32000052000021 is a deficient number, since it is larger than the sum of its proper divisors (19710565190379).

32000052000021 is a wasteful number, since it uses less digits than its factorization.

32000052000021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144630.

The product of its (nonzero) digits is 120, while the sum is 15.

Adding to 32000052000021 its reverse (12000025000023), we get a palindrome (44000077000044).

The spelling of 32000052000021 in words is "thirty-two trillion, fifty-two million, twenty-one", and thus it is an aban number and an uban number.