645336710832000 has 256 divisors, whose sum is σ = 2333772216172800. Its totient is φ = 156445263104000.

The previous prime is 645336710831987. The next prime is 645336710832007. The reversal of 645336710832000 is 238017633546.

It is a super-2 number, since 2×645336710832000² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (645336710832007) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 610586310 + ... + 611642309.

It is an arithmetic number, because the mean of its divisors is an integer number (9116297719425).

Almost surely, 2^{645336710832000} is an apocalyptic number.

645336710832000 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

645336710832000 is an abundant number, since it is smaller than the sum of its proper divisors (1688435505340800).

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

645336710832000 is a wasteful number, since it uses less digits than its factorization.

645336710832000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1222228662 (or 1222228640 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 48.

The spelling of 645336710832000 in words is "six hundred forty-five trillion, three hundred thirty-six billion, seven hundred ten million, eight hundred thirty-two thousand".