64118562797 has 2 divisors, whose sum is σ = 64118562798. Its totient is φ = 64118562796.

The previous prime is 64118562793. The next prime is 64118562811. The reversal of 64118562797 is 79726581146.

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., 63225090916 + 893471881 = 251446^2 + 29891^2 .

It is a cyclic number.

It is not a de Polignac number, because 64118562797 - 2² = 64118562793 is a prime.

It is a super-2 number, since 2×64118562797² (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 (64118562793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32059281398 + 32059281399.

It is an arithmetic number, because the mean of its divisors is an integer number (32059281399).

Almost surely, 2^64118562797 is an apocalyptic number.

It is an amenable number.

64118562797 is a deficient number, since it is larger than the sum of its proper divisors (1).

64118562797 is an equidigital number, since it uses as much as digits as its factorization.

64118562797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5080320, while the sum is 56.

The spelling of 64118562797 in words is "sixty-four billion, one hundred eighteen million, five hundred sixty-two thousand, seven hundred ninety-seven".