64116554797 has 2 divisors, whose sum is σ = 64116554798. Its totient is φ = 64116554796.

The previous prime is 64116554779. The next prime is 64116554813. The reversal of 64116554797 is 79745561146.

Together with previous prime (64116554779) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63857795401 + 258759396 = 252701^2 + 16086^2 .

It is a cyclic number.

It is not a de Polignac number, because 64116554797 - 2³⁵ = 29756816429 is a prime.

It is a super-2 number, since 2×64116554797² (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 (64116551797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32058277398 + 32058277399.

It is an arithmetic number, because the mean of its divisors is an integer number (32058277399).

Almost surely, 2^64116554797 is an apocalyptic number.

It is an amenable number.

64116554797 is a deficient number, since it is larger than the sum of its proper divisors (1).

64116554797 is an equidigital number, since it uses as much as digits as its factorization.

64116554797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6350400, while the sum is 55.

The spelling of 64116554797 in words is "sixty-four billion, one hundred sixteen million, five hundred fifty-four thousand, seven hundred ninety-seven".