64734172346 has 16 divisors (see below), whose sum is σ = 97453754664. Its totient is φ = 32249677824.

The previous prime is 64734172309. The next prime is 64734172369. The reversal of 64734172346 is 64327143746.

64734172346 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 53043156721 + 11691015625 = 230311^2 + 108125^2 .

It is a super-2 number, since 2×64734172346² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 64734172346.

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, 1504346 + ... + 1546778.

Almost surely, 2^64734172346 is an apocalyptic number.

64734172346 is a deficient number, since it is larger than the sum of its proper divisors (32719582318).

64734172346 is a wasteful number, since it uses less digits than its factorization.

64734172346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45185.

The product of its digits is 2032128, while the sum is 47.

The spelling of 64734172346 in words is "sixty-four billion, seven hundred thirty-four million, one hundred seventy-two thousand, three hundred forty-six".