451620772579913 has 2 divisors, whose sum is σ = 451620772579914. Its totient is φ = 451620772579912.

The previous prime is 451620772579883. The next prime is 451620772579939. The reversal of 451620772579913 is 319975277026154.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 450499054351369 + 1121718228544 = 21224963^2 + 1059112^2 .

It is a cyclic number.

It is not a de Polignac number, because 451620772579913 - 2⁶ = 451620772579849 is a prime.

It is a super-2 number, since 2×451620772579913² (a number of 30 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 (451620772579973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225810386289956 + 225810386289957.

It is an arithmetic number, because the mean of its divisors is an integer number (225810386289957).

Almost surely, 2^{451620772579913} is an apocalyptic number.

It is an amenable number.

451620772579913 is a deficient number, since it is larger than the sum of its proper divisors (1).

451620772579913 is an equidigital number, since it uses as much as digits as its factorization.

451620772579913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 200037600, while the sum is 68.

The spelling of 451620772579913 in words is "four hundred fifty-one trillion, six hundred twenty billion, seven hundred seventy-two million, five hundred seventy-nine thousand, nine hundred thirteen".