623063554225581 has 64 divisors (see below), whose sum is σ = 966425518227456. Its totient is φ = 349726696243200.

The previous prime is 623063554225573. The next prime is 623063554225583. The reversal of 623063554225581 is 185522455360326.

It is not a de Polignac number, because 623063554225581 - 2³ = 623063554225573 is a prime.

It is a super-2 number, since 2×623063554225581² (a number of 30 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623063554225583) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 167605216 + ... + 171282326.

It is an arithmetic number, because the mean of its divisors is an integer number (15100398722304).

Almost surely, 2^{623063554225581} is an apocalyptic number.

It is an amenable number.

623063554225581 is a deficient number, since it is larger than the sum of its proper divisors (343361964001875).

623063554225581 is a wasteful number, since it uses less digits than its factorization.

623063554225581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3677842.

The product of its (nonzero) digits is 51840000, while the sum is 57.

The spelling of 623063554225581 in words is "six hundred twenty-three trillion, sixty-three billion, five hundred fifty-four million, two hundred twenty-five thousand, five hundred eighty-one".