64397308371 has 16 divisors (see below), whose sum is σ = 99178743168. Its totient is φ = 36732867200.

The previous prime is 64397308301. The next prime is 64397308373. The reversal of 64397308371 is 17380379346.

It is a cyclic number.

It is not a de Polignac number, because 64397308371 - 2¹³ = 64397300179 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (64397308373) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57394545 + ... + 57395666.

It is an arithmetic number, because the mean of its divisors is an integer number (6198671448).

Almost surely, 2^64397308371 is an apocalyptic number.

64397308371 is a deficient number, since it is larger than the sum of its proper divisors (34781434797).

64397308371 is a wasteful number, since it uses less digits than its factorization.

64397308371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114790242.

The product of its (nonzero) digits is 2286144, while the sum is 51.

The spelling of 64397308371 in words is "sixty-four billion, three hundred ninety-seven million, three hundred eight thousand, three hundred seventy-one".