620172650621272 has 32 divisors (see below), whose sum is σ = 1357216743006720. Its totient is φ = 260133209074080.

The previous prime is 620172650621257. The next prime is 620172650621323. The reversal of 620172650621272 is 272126056271026.

It is a super-2 number, since 2×620172650621272² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117813950754 + ... + 117813956017.

It is an arithmetic number, because the mean of its divisors is an integer number (42413023218960).

Almost surely, 2^{620172650621272} is an apocalyptic number.

It is an amenable number.

620172650621272 is an abundant number, since it is smaller than the sum of its proper divisors (737044092385448).

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

620172650621272 is a wasteful number, since it uses less digits than its factorization.

620172650621272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235627906831 (or 235627906827 counting only the distinct ones).

The product of its (nonzero) digits is 1693440, while the sum is 49.

The spelling of 620172650621272 in words is "six hundred twenty trillion, one hundred seventy-two billion, six hundred fifty million, six hundred twenty-one thousand, two hundred seventy-two".