64157124077 has 2 divisors, whose sum is σ = 64157124078. Its totient is φ = 64157124076.

The previous prime is 64157124047. The next prime is 64157124089. The reversal of 64157124077 is 77042175146.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42565466596 + 21591657481 = 206314^2 + 146941^2 .

It is a cyclic number.

It is not a de Polignac number, because 64157124077 - 2⁶ = 64157124013 is a prime.

It is a super-2 number, since 2×64157124077² (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 (64157124047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32078562038 + 32078562039.

It is an arithmetic number, because the mean of its divisors is an integer number (32078562039).

Almost surely, 2^64157124077 is an apocalyptic number.

It is an amenable number.

64157124077 is a deficient number, since it is larger than the sum of its proper divisors (1).

64157124077 is an equidigital number, since it uses as much as digits as its factorization.

64157124077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 329280, while the sum is 44.

The spelling of 64157124077 in words is "sixty-four billion, one hundred fifty-seven million, one hundred twenty-four thousand, seventy-seven".