623645124366 has 32 divisors (see below), whose sum is σ = 1379844792576. Its totient is φ = 186321632000.

The previous prime is 623645124341. The next prime is 623645124383. The reversal of 623645124366 is 663421546326.

It is a super-2 number, since 2×623645124366² (a number of 24 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 (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66538755 + ... + 66548126.

It is an arithmetic number, because the mean of its divisors is an integer number (43120149768).

Almost surely, 2^623645124366 is an apocalyptic number.

623645124366 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

623645124366 is an abundant number, since it is smaller than the sum of its proper divisors (756199668210).

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

623645124366 is a wasteful number, since it uses less digits than its factorization.

623645124366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133086968.

The product of its digits is 3732480, while the sum is 48.

The spelling of 623645124366 in words is "six hundred twenty-three billion, six hundred forty-five million, one hundred twenty-four thousand, three hundred sixty-six".