623707819972 has 24 divisors (see below), whose sum is σ = 1095058841184. Its totient is φ = 310834564032.

The previous prime is 623707819921. The next prime is 623707820017. The reversal of 623707819972 is 279918707326.

It is a super-2 number, since 2×623707819972² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 623707819972.

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, 3546543 + ... + 3718249.

It is an arithmetic number, because the mean of its divisors is an integer number (45627451716).

Almost surely, 2^623707819972 is an apocalyptic number.

It is an amenable number.

623707819972 is a deficient number, since it is larger than the sum of its proper divisors (471351021212).

623707819972 is a wasteful number, since it uses less digits than its factorization.

623707819972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174675 (or 174673 counting only the distinct ones).

The product of its (nonzero) digits is 16003008, while the sum is 61.

The spelling of 623707819972 in words is "six hundred twenty-three billion, seven hundred seven million, eight hundred nineteen thousand, nine hundred seventy-two".