16312636577 has 2 divisors, whose sum is σ = 16312636578. Its totient is φ = 16312636576.

The previous prime is 16312636519. The next prime is 16312636583. The reversal of 16312636577 is 77563621361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14342697121 + 1969939456 = 119761^2 + 44384^2 .

It is a cyclic number.

It is not a de Polignac number, because 16312636577 - 2⁶ = 16312636513 is a prime.

It is a super-2 number, since 2×16312636577² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16312636597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8156318288 + 8156318289.

It is an arithmetic number, because the mean of its divisors is an integer number (8156318289).

Almost surely, 2^16312636577 is an apocalyptic number.

It is an amenable number.

16312636577 is a deficient number, since it is larger than the sum of its proper divisors (1).

16312636577 is an equidigital number, since it uses as much as digits as its factorization.

16312636577 is an evil number, because the sum of its binary digits is even.

The product of its digits is 952560, while the sum is 47.

The spelling of 16312636577 in words is "sixteen billion, three hundred twelve million, six hundred thirty-six thousand, five hundred seventy-seven".