64242604720 has 40 divisors (see below), whose sum is σ = 170701779744. Its totient is φ = 22026035712.

The previous prime is 64242604669. The next prime is 64242604739. The reversal of 64242604720 is 2740624246.

64242604720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×64242604720² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 64242604720.

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, 57358909 + ... + 57360028.

Almost surely, 2^64242604720 is an apocalyptic number.

It is an amenable number.

64242604720 is an abundant number, since it is smaller than the sum of its proper divisors (106459175024).

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

64242604720 is a wasteful number, since it uses less digits than its factorization.

64242604720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114718957 (or 114718951 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 37.

The spelling of 64242604720 in words is "sixty-four billion, two hundred forty-two million, six hundred four thousand, seven hundred twenty".