59217901921 has 2 divisors, whose sum is σ = 59217901922. Its totient is φ = 59217901920.

The previous prime is 59217901913. The next prime is 59217901937. The reversal of 59217901921 is 12910971295.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33109805521 + 26108096400 = 181961^2 + 161580^2 .

It is a cyclic number.

It is not a de Polignac number, because 59217901921 - 2³ = 59217901913 is a prime.

It is not a weakly prime, because it can be changed into another prime (59217901991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 29608950960 + 29608950961.

It is an arithmetic number, because the mean of its divisors is an integer number (29608950961).

Almost surely, 2^59217901921 is an apocalyptic number.

It is an amenable number.

59217901921 is a deficient number, since it is larger than the sum of its proper divisors (1).

59217901921 is an equidigital number, since it uses as much as digits as its factorization.

59217901921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 102060, while the sum is 46.

The spelling of 59217901921 in words is "fifty-nine billion, two hundred seventeen million, nine hundred one thousand, nine hundred twenty-one".