64965256946 has 16 divisors (see below), whose sum is σ = 100814500800. Its totient is φ = 31360564368.

The previous prime is 64965256921. The next prime is 64965256991.

It is a happy number.

64965256946 is nontrivially palindromic in base 10.

64965256946 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×64965256946² (a number of 22 digits) contains 22 as substring.

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, 1380635 + ... + 1426913.

It is an arithmetic number, because the mean of its divisors is an integer number (6300906300).

Almost surely, 2^64965256946 is an apocalyptic number.

64965256946 is a deficient number, since it is larger than the sum of its proper divisors (35849243854).

64965256946 is a wasteful number, since it uses less digits than its factorization.

64965256946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70513.

The product of its digits is 83980800, while the sum is 62.

The spelling of 64965256946 in words is "sixty-four billion, nine hundred sixty-five million, two hundred fifty-six thousand, nine hundred forty-six".