623002394981 has 16 divisors (see below), whose sum is σ = 645061951488. Its totient is φ = 601066915200.

The previous prime is 623002394977. The next prime is 623002395007. The reversal of 623002394981 is 189493200326.

It is a cyclic number.

It is not a de Polignac number, because 623002394981 - 2² = 623002394977 is a prime.

It is a super-2 number, since 2×623002394981² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623002394081) by changing a digit.

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, 30349001 + ... + 30369521.

It is an arithmetic number, because the mean of its divisors is an integer number (40316371968).

Almost surely, 2^623002394981 is an apocalyptic number.

It is an amenable number.

623002394981 is a deficient number, since it is larger than the sum of its proper divisors (22059556507).

623002394981 is a wasteful number, since it uses less digits than its factorization.

623002394981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23492.

The product of its (nonzero) digits is 559872, while the sum is 47.

The spelling of 623002394981 in words is "six hundred twenty-three billion, two million, three hundred ninety-four thousand, nine hundred eighty-one".