64734172347 has 32 divisors (see below), whose sum is σ = 98450698752. Its totient is φ = 37481163264.

The previous prime is 64734172309. The next prime is 64734172369. The reversal of 64734172347 is 74327143746.

It is not a de Polignac number, because 64734172347 - 2⁷ = 64734172219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64734172296 and 64734172305.

It is not an unprimeable number, because it can be changed into a prime (64734172847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2337898 + ... + 2365424.

It is an arithmetic number, because the mean of its divisors is an integer number (3076584336).

Almost surely, 2^64734172347 is an apocalyptic number.

64734172347 is a deficient number, since it is larger than the sum of its proper divisors (33716526405).

64734172347 is a wasteful number, since it uses less digits than its factorization.

64734172347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31107.

The product of its digits is 2370816, while the sum is 48.

The spelling of 64734172347 in words is "sixty-four billion, seven hundred thirty-four million, one hundred seventy-two thousand, three hundred forty-seven".