58631851721 has 2 divisors, whose sum is σ = 58631851722. Its totient is φ = 58631851720.

The previous prime is 58631851703. The next prime is 58631851801. The reversal of 58631851721 is 12715813685.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40858962496 + 17772889225 = 202136^2 + 133315^2 .

It is a cyclic number.

It is not a de Polignac number, because 58631851721 - 2³⁰ = 57558109897 is a prime.

It is not a weakly prime, because it can be changed into another prime (58631859721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 29315925860 + 29315925861.

It is an arithmetic number, because the mean of its divisors is an integer number (29315925861).

Almost surely, 2^58631851721 is an apocalyptic number.

It is an amenable number.

58631851721 is a deficient number, since it is larger than the sum of its proper divisors (1).

58631851721 is an equidigital number, since it uses as much as digits as its factorization.

58631851721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 403200, while the sum is 47.

The spelling of 58631851721 in words is "fifty-eight billion, six hundred thirty-one million, eight hundred fifty-one thousand, seven hundred twenty-one".