664466400502 has 16 divisors (see below), whose sum is σ = 997872653232. Its totient is φ = 331842269440.

The previous prime is 664466400461. The next prime is 664466400509. The reversal of 664466400502 is 205004664466.

664466400502 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664466400509) 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, 21335502 + ... + 21366622.

It is an arithmetic number, because the mean of its divisors is an integer number (62367040827).

Almost surely, 2^664466400502 is an apocalyptic number.

664466400502 is a deficient number, since it is larger than the sum of its proper divisors (333406252730).

664466400502 is a wasteful number, since it uses less digits than its factorization.

664466400502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43343.

The product of its (nonzero) digits is 829440, while the sum is 43.

The spelling of 664466400502 in words is "six hundred sixty-four billion, four hundred sixty-six million, four hundred thousand, five hundred two".