632820193956 has 36 divisors (see below), whose sum is σ = 1599666676972. Its totient is φ = 210935073024.

The previous prime is 632820193939. The next prime is 632820193979. The reversal of 632820193956 is 659391028236.

It can be written as a sum of positive squares in 2 ways, for example, as 317182976100 + 315637217856 = 563190^2 + 561816^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×632820193956² (a number of 24 digits) contains 22 as substring.

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 11 ways as a sum of consecutive naturals, for example, 1534416 + ... + 1902648.

Almost surely, 2^632820193956 is an apocalyptic number.

It is an amenable number.

632820193956 is an abundant number, since it is smaller than the sum of its proper divisors (966846483016).

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

632820193956 is a wasteful number, since it uses less digits than its factorization.

632820193956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415980 (or 415975 counting only the distinct ones).

The product of its (nonzero) digits is 4199040, while the sum is 54.

The spelling of 632820193956 in words is "six hundred thirty-two billion, eight hundred twenty million, one hundred ninety-three thousand, nine hundred fifty-six".