64042663320764 has 24 divisors (see below), whose sum is σ = 116785576610640. Its totient is φ = 30691475190656.

The previous prime is 64042663320763. The next prime is 64042663320781. The reversal of 64042663320764 is 46702336624046.

It is a super-2 number, since 2×64042663320764² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64042663320763) 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, 2014918142 + ... + 2014949925.

It is an arithmetic number, because the mean of its divisors is an integer number (4866065692110).

Almost surely, 2^{64042663320764} is an apocalyptic number.

It is an amenable number.

64042663320764 is a deficient number, since it is larger than the sum of its proper divisors (52742913289876).

64042663320764 is a wasteful number, since it uses less digits than its factorization.

64042663320764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4029868237 (or 4029868235 counting only the distinct ones).

The product of its (nonzero) digits is 20901888, while the sum is 53.

The spelling of 64042663320764 in words is "sixty-four trillion, forty-two billion, six hundred sixty-three million, three hundred twenty thousand, seven hundred sixty-four".