65428445077 has 16 divisors (see below), whose sum is σ = 66754050048. Its totient is φ = 64117764720.

The previous prime is 65428445063. The next prime is 65428445081. The reversal of 65428445077 is 77054482456.

It is a cyclic number.

It is not a de Polignac number, because 65428445077 - 2²³ = 65420056469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65428445057) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5231802 + ... + 5244292.

It is an arithmetic number, because the mean of its divisors is an integer number (4172128128).

Almost surely, 2^65428445077 is an apocalyptic number.

It is an amenable number.

65428445077 is a deficient number, since it is larger than the sum of its proper divisors (1325604971).

65428445077 is a wasteful number, since it uses less digits than its factorization.

65428445077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13080.

The product of its (nonzero) digits is 7526400, while the sum is 52.

The spelling of 65428445077 in words is "sixty-five billion, four hundred twenty-eight million, four hundred forty-five thousand, seventy-seven".