32421013637 has 2 divisors, whose sum is σ = 32421013638. Its totient is φ = 32421013636.

The previous prime is 32421013631. The next prime is 32421013661. The reversal of 32421013637 is 73631012423.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23327674756 + 9093338881 = 152734^2 + 95359^2 .

It is a cyclic number.

It is not a de Polignac number, because 32421013637 - 2⁴ = 32421013621 is a prime.

It is a super-2 number, since 2×32421013637² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32421013631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16210506818 + 16210506819.

It is an arithmetic number, because the mean of its divisors is an integer number (16210506819).

Almost surely, 2^32421013637 is an apocalyptic number.

It is an amenable number.

32421013637 is a deficient number, since it is larger than the sum of its proper divisors (1).

32421013637 is an equidigital number, since it uses as much as digits as its factorization.

32421013637 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 32.

The spelling of 32421013637 in words is "thirty-two billion, four hundred twenty-one million, thirteen thousand, six hundred thirty-seven".