623204363472581 has 16 divisors (see below), whose sum is σ = 680721779729088. Its totient is φ = 565830774230400.

The previous prime is 623204363472541. The next prime is 623204363472589. The reversal of 623204363472581 is 185274363402326.

It is a cyclic number.

It is not a de Polignac number, because 623204363472581 - 2¹⁴ = 623204363456197 is a prime.

It is a super-2 number, since 2×623204363472581² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623204363472589) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 151906031 + ... + 155954643.

It is an arithmetic number, because the mean of its divisors is an integer number (42545111233068).

Almost surely, 2^{623204363472581} is an apocalyptic number.

It is an amenable number.

623204363472581 is a deficient number, since it is larger than the sum of its proper divisors (57517416256507).

623204363472581 is a wasteful number, since it uses less digits than its factorization.

623204363472581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4066372.

The product of its (nonzero) digits is 34836480, while the sum is 56.

The spelling of 623204363472581 in words is "six hundred twenty-three trillion, two hundred four billion, three hundred sixty-three million, four hundred seventy-two thousand, five hundred eighty-one".