664615351542100 has 108 divisors (see below), whose sum is σ = 1677704822935680. Its totient is φ = 227864618251200.

The previous prime is 664615351542017. The next prime is 664615351542119. The reversal of 664615351542100 is 1245153516466.

664615351542100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 328423171 + ... + 330440629.

Almost surely, 2^{664615351542100} is an apocalyptic number.

It is an amenable number.

664615351542100 is an abundant number, since it is smaller than the sum of its proper divisors (1013089471393580).

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

664615351542100 is a wasteful number, since it uses less digits than its factorization.

664615351542100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2084718 (or 2084704 counting only the distinct ones).

The product of its (nonzero) digits is 2592000, while the sum is 49.

The spelling of 664615351542100 in words is "six hundred sixty-four trillion, six hundred fifteen billion, three hundred fifty-one million, five hundred forty-two thousand, one hundred".