64012127677 has 2 divisors, whose sum is σ = 64012127678. Its totient is φ = 64012127676.

The previous prime is 64012127603. The next prime is 64012127693. The reversal of 64012127677 is 77672121046.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62866034361 + 1146093316 = 250731^2 + 33854^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64012127677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64012127077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32006063838 + 32006063839.

It is an arithmetic number, because the mean of its divisors is an integer number (32006063839).

Almost surely, 2^64012127677 is an apocalyptic number.

It is an amenable number.

64012127677 is a deficient number, since it is larger than the sum of its proper divisors (1).

64012127677 is an equidigital number, since it uses as much as digits as its factorization.

64012127677 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 197568, while the sum is 43.

The spelling of 64012127677 in words is "sixty-four billion, twelve million, one hundred twenty-seven thousand, six hundred seventy-seven".