623665063504450 has 192 divisors, whose sum is σ = 1371217666452480. Its totient is φ = 208597945248000.

The previous prime is 623665063504421. The next prime is 623665063504481. The reversal of 623665063504450 is 54405360566326.

It is a super-2 number, since 2×623665063504450² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is a junction number, because it is equal to n+sod(n) for n = 623665063504391 and 623665063504400.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 70885980 + ... + 79196920.

It is an arithmetic number, because the mean of its divisors is an integer number (7141758679440).

Almost surely, 2^{623665063504450} is an apocalyptic number.

623665063504450 is an abundant number, since it is smaller than the sum of its proper divisors (747552602948030).

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

623665063504450 is a wasteful number, since it uses less digits than its factorization.

623665063504450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8311193 (or 8311188 counting only the distinct ones).

The product of its (nonzero) digits is 46656000, while the sum is 55.

The spelling of 623665063504450 in words is "six hundred twenty-three trillion, six hundred sixty-five billion, sixty-three million, five hundred four thousand, four hundred fifty".