623426853901 has 24 divisors (see below), whose sum is σ = 687645590240. Its totient is φ = 563590288800.

The previous prime is 623426853893. The next prime is 623426853913. The reversal of 623426853901 is 109358624326.

It is not a de Polignac number, because 623426853901 - 2³ = 623426853893 is a prime.

It is a super-2 number, since 2×623426853901² (a number of 24 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 (623426854901) 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 23 ways as a sum of consecutive naturals, for example, 4157806 + ... + 4305136.

Almost surely, 2^623426853901 is an apocalyptic number.

It is an amenable number.

623426853901 is a deficient number, since it is larger than the sum of its proper divisors (64218736339).

623426853901 is a wasteful number, since it uses less digits than its factorization.

623426853901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147817 (or 147794 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 49.

The spelling of 623426853901 in words is "six hundred twenty-three billion, four hundred twenty-six million, eight hundred fifty-three thousand, nine hundred one".