620172650621232 has 160 divisors (see below), whose sum is σ = 1787297929896960. Its totient is φ = 205891770620160.

The previous prime is 620172650621221. The next prime is 620172650621257. The reversal of 620172650621232 is 232126056271026.

620172650621232 is a `hidden beast` number, since 6 + 2 + 0 + 17 + 2 + 6 + 5 + 0 + 621 + 2 + 3 + 2 = 666.

It is a super-2 number, since 2×620172650621232² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 345990418 + ... + 347778254.

It is an arithmetic number, because the mean of its divisors is an integer number (11170612061856).

Almost surely, 2^{620172650621232} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 620172650621232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (893648964948480).

620172650621232 is an abundant number, since it is smaller than the sum of its proper divisors (1167125279275728).

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

620172650621232 is a wasteful number, since it uses less digits than its factorization.

620172650621232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1791088 (or 1791076 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The spelling of 620172650621232 in words is "six hundred twenty trillion, one hundred seventy-two billion, six hundred fifty million, six hundred twenty-one thousand, two hundred thirty-two".