964139918457 has 4 divisors (see below), whose sum is σ = 1285519891280. Its totient is φ = 642759945636.

The previous prime is 964139918437. The next prime is 964139918471. The reversal of 964139918457 is 754819931469.

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, and also an emirpimes, since its reverse is a distinct semiprime: 754819931469 = 3 ⋅251606643823.

It is not a de Polignac number, because 964139918457 - 2⁶ = 964139918393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (964139918437) 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, 160689986407 + ... + 160689986412.

It is an arithmetic number, because the mean of its divisors is an integer number (321379972820).

Almost surely, 2^964139918457 is an apocalyptic number.

It is an amenable number.

964139918457 is a deficient number, since it is larger than the sum of its proper divisors (321379972823).

964139918457 is a wasteful number, since it uses less digits than its factorization.

964139918457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321379972822.

The product of its digits is 58786560, while the sum is 66.

The spelling of 964139918457 in words is "nine hundred sixty-four billion, one hundred thirty-nine million, nine hundred eighteen thousand, four hundred fifty-seven".