623564364431016 has 256 divisors, whose sum is σ = 1790739425664000. Its totient is φ = 200899639584000.

The previous prime is 623564364431003. The next prime is 623564364431287. The reversal of 623564364431016 is 610134463465326.

623564364431016 is a `hidden beast` number, since 6 + 2 + 3 + 5 + 64 + 36 + 443 + 101 + 6 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 759860875 + ... + 760681061.

It is an arithmetic number, because the mean of its divisors is an integer number (6995075881500).

Almost surely, 2^{623564364431016} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 623564364431016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (895369712832000).

623564364431016 is an abundant number, since it is smaller than the sum of its proper divisors (1167175061232984).

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

623564364431016 is a wasteful number, since it uses less digits than its factorization.

623564364431016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 820869 (or 820859 counting only the distinct ones).

The product of its (nonzero) digits is 22394880, while the sum is 54.

The spelling of 623564364431016 in words is "six hundred twenty-three trillion, five hundred sixty-four billion, three hundred sixty-four million, four hundred thirty-one thousand, sixteen".