64468686446 has 16 divisors (see below), whose sum is σ = 98002929024. Its totient is φ = 31802113464.

The previous prime is 64468686433. The next prime is 64468686449.

64468686446 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×64468686446² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64468686449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 146420 + ... + 387783.

It is an arithmetic number, because the mean of its divisors is an integer number (6125183064).

Almost surely, 2^64468686446 is an apocalyptic number.

64468686446 is a deficient number, since it is larger than the sum of its proper divisors (33534242578).

64468686446 is a wasteful number, since it uses less digits than its factorization.

64468686446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535015.

The product of its digits is 127401984, while the sum is 62.

The spelling of 64468686446 in words is "sixty-four billion, four hundred sixty-eight million, six hundred eighty-six thousand, four hundred forty-six".