64967501397 has 4 divisors (see below), whose sum is σ = 86623335200. Its totient is φ = 43311667596.

The previous prime is 64967501341. The next prime is 64967501399. The reversal of 64967501397 is 79310576946.

It is a happy number.

64967501397 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 64967501397 - 2²² = 64963307093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64967501399) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10827916897 + ... + 10827916902.

It is an arithmetic number, because the mean of its divisors is an integer number (21655833800).

Almost surely, 2^64967501397 is an apocalyptic number.

It is an amenable number.

64967501397 is a deficient number, since it is larger than the sum of its proper divisors (21655833803).

64967501397 is a wasteful number, since it uses less digits than its factorization.

64967501397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21655833802.

The product of its (nonzero) digits is 8573040, while the sum is 57.

The spelling of 64967501397 in words is "sixty-four billion, nine hundred sixty-seven million, five hundred one thousand, three hundred ninety-seven".