32051538521 has 2 divisors, whose sum is σ = 32051538522. Its totient is φ = 32051538520.

The previous prime is 32051538517. The next prime is 32051538529. The reversal of 32051538521 is 12583515023.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27634075225 + 4417463296 = 166235^2 + 66464^2 .

It is a cyclic number.

It is not a de Polignac number, because 32051538521 - 2² = 32051538517 is a prime.

It is a super-2 number, since 2×32051538521² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (32051538529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16025769260 + 16025769261.

It is an arithmetic number, because the mean of its divisors is an integer number (16025769261).

Almost surely, 2^32051538521 is an apocalyptic number.

It is an amenable number.

32051538521 is a deficient number, since it is larger than the sum of its proper divisors (1).

32051538521 is an equidigital number, since it uses as much as digits as its factorization.

32051538521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36000, while the sum is 35.

The spelling of 32051538521 in words is "thirty-two billion, fifty-one million, five hundred thirty-eight thousand, five hundred twenty-one".