623359121255640 has 2304 divisors, whose sum is σ = 2761755165711360. Its totient is φ = 123647283302400.

The previous prime is 623359121255621. The next prime is 623359121255753. The reversal of 623359121255640 is 46552121953326.

623359121255640 is a `hidden beast` number, since 6 + 2 + 3 + 3 + 59 + 1 + 2 + 1 + 25 + 564 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 575 ways as a sum of consecutive naturals, for example, 16144579935 + ... + 16144618545.

It is an arithmetic number, because the mean of its divisors is an integer number (1198678457340).

Almost surely, 2^{623359121255640} is an apocalyptic number.

623359121255640 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 623359121255640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1380877582855680).

623359121255640 is an abundant number, since it is smaller than the sum of its proper divisors (2138396044455720).

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

623359121255640 is a wasteful number, since it uses less digits than its factorization.

623359121255640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38756 (or 38729 counting only the distinct ones).

The product of its (nonzero) digits is 11664000, while the sum is 54.

The spelling of 623359121255640 in words is "six hundred twenty-three trillion, three hundred fifty-nine billion, one hundred twenty-one million, two hundred fifty-five thousand, six hundred forty".