64268744964 has 12 divisors (see below), whose sum is σ = 149960404944. Its totient is φ = 21422914984.

The previous prime is 64268744941. The next prime is 64268744971. The reversal of 64268744964 is 46944786246.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-4 number, since 4×64268744964⁴ (a number of 44 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 64268744898 and 64268744907.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2677864362 + ... + 2677864385.

It is an arithmetic number, because the mean of its divisors is an integer number (12496700412).

Almost surely, 2^64268744964 is an apocalyptic number.

It is an amenable number.

64268744964 is an abundant number, since it is smaller than the sum of its proper divisors (85691659980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64268744964 is a wasteful number, since it uses less digits than its factorization.

64268744964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5355728754 (or 5355728752 counting only the distinct ones).

The product of its digits is 55738368, while the sum is 60.

The spelling of 64268744964 in words is "sixty-four billion, two hundred sixty-eight million, seven hundred forty-four thousand, nine hundred sixty-four".