64809319274 has 16 divisors (see below), whose sum is σ = 111105859200. Its totient is φ = 27774380304.

The previous prime is 64809319259. The next prime is 64809319303. The reversal of 64809319274 is 47291390846.

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, 389747 + ... + 530585.

It is an arithmetic number, because the mean of its divisors is an integer number (6944116200).

Almost surely, 2^64809319274 is an apocalyptic number.

64809319274 is a deficient number, since it is larger than the sum of its proper divisors (46296539926).

64809319274 is a wasteful number, since it uses less digits than its factorization.

64809319274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173717.

The product of its (nonzero) digits is 2612736, while the sum is 53.

The spelling of 64809319274 in words is "sixty-four billion, eight hundred nine million, three hundred nineteen thousand, two hundred seventy-four".