64777860242 has 16 divisors (see below), whose sum is σ = 97313575392. Its totient is φ = 32340040320.

The previous prime is 64777860229. The next prime is 64777860269. The reversal of 64777860242 is 24206877746.

64777860242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3939017 + ... + 3955427.

It is an arithmetic number, because the mean of its divisors is an integer number (6082098462).

Almost surely, 2^64777860242 is an apocalyptic number.

64777860242 is a deficient number, since it is larger than the sum of its proper divisors (32535715150).

64777860242 is a wasteful number, since it uses less digits than its factorization.

64777860242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19273.

The product of its (nonzero) digits is 6322176, while the sum is 53.

The spelling of 64777860242 in words is "sixty-four billion, seven hundred seventy-seven million, eight hundred sixty thousand, two hundred forty-two".