64620456004 has 48 divisors (see below), whose sum is σ = 123051685120. Its totient is φ = 29514948480.

The previous prime is 64620455969. The next prime is 64620456077. The reversal of 64620456004 is 40065402646.

64620456004 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10060714 + ... + 10067134.

Almost surely, 2^64620456004 is an apocalyptic number.

It is an amenable number.

64620456004 is a deficient number, since it is larger than the sum of its proper divisors (58431229116).

64620456004 is a wasteful number, since it uses less digits than its factorization.

64620456004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8420 (or 8418 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 37.

The spelling of 64620456004 in words is "sixty-four billion, six hundred twenty million, four hundred fifty-six thousand, four".