664676141705600 has 48 divisors (see below), whose sum is σ = 1641957781315020. Its totient is φ = 265870456680960.

The previous prime is 664676141705579. The next prime is 664676141705603. The reversal of 664676141705600 is 6507141676466.

It is a self number, because there is not a number n which added to its sum of digits gives 664676141705600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664676141705603) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 103855643942 + ... + 103855650341.

Almost surely, 2^{664676141705600} is an apocalyptic number.

It is an amenable number.

664676141705600 is an abundant number, since it is smaller than the sum of its proper divisors (977281639609420).

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

664676141705600 is a wasteful number, since it uses less digits than its factorization.

664676141705600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207711294307 (or 207711294290 counting only the distinct ones).

The product of its (nonzero) digits is 30481920, while the sum is 59.

The spelling of 664676141705600 in words is "six hundred sixty-four trillion, six hundred seventy-six billion, one hundred forty-one million, seven hundred five thousand, six hundred".