4001263564664 has 8 divisors (see below), whose sum is σ = 7502369183760. Its totient is φ = 2000631782328.

The previous prime is 4001263564657. The next prime is 4001263564681. The reversal of 4001263564664 is 4664653621004.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×4001263564664² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250078972784 + ... + 250078972799.

It is an arithmetic number, because the mean of its divisors is an integer number (937796147970).

Almost surely, 2^{4001263564664} is an apocalyptic number.

It is an amenable number.

4001263564664 is a deficient number, since it is larger than the sum of its proper divisors (3501105619096).

4001263564664 is a wasteful number, since it uses less digits than its factorization.

4001263564664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500157945589 (or 500157945585 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 47.

The spelling of 4001263564664 in words is "four trillion, one billion, two hundred sixty-three million, five hundred sixty-four thousand, six hundred sixty-four".