641607745939200 has 378 divisors, whose sum is σ = 2381029933218104. Its totient is φ = 171095397672960.

The previous prime is 641607745939187. The next prime is 641607745939211. The reversal of 641607745939200 is 2939547706146.

641607745939200 is a `hidden beast` number, since 6 + 4 + 1 + 60 + 77 + 459 + 39 + 20 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 41 ways as a sum of consecutive naturals, for example, 64093804 + ... + 73425003.

Almost surely, 2^{641607745939200} is an apocalyptic number.

641607745939200 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

641607745939200 is an abundant number, since it is smaller than the sum of its proper divisors (1739422187278904).

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

641607745939200 is an equidigital number, since it uses as much as digits as its factorization.

641607745939200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137518851 (or 137518817 counting only the distinct ones).

The product of its (nonzero) digits is 68584320, while the sum is 63.

The spelling of 641607745939200 in words is "six hundred forty-one trillion, six hundred seven billion, seven hundred forty-five million, nine hundred thirty-nine thousand, two hundred".