64438335874 has 16 divisors (see below), whose sum is σ = 107434071360. Its totient is φ = 28737507760.

The previous prime is 64438335853. The next prime is 64438335887. The reversal of 64438335874 is 47853383446.

It is a happy number.

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, 27631054 + ... + 27633385.

It is an arithmetic number, because the mean of its divisors is an integer number (6714629460).

Almost surely, 2^64438335874 is an apocalyptic number.

64438335874 is a deficient number, since it is larger than the sum of its proper divisors (42995735486).

64438335874 is a wasteful number, since it uses less digits than its factorization.

64438335874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55264505.

The product of its digits is 23224320, while the sum is 55.

The spelling of 64438335874 in words is "sixty-four billion, four hundred thirty-eight million, three hundred thirty-five thousand, eight hundred seventy-four".