20366573623 has 8 divisors (see below), whose sum is σ = 23184084096. Its totient is φ = 17710063800.

The previous prime is 20366573599. The next prime is 20366573629. The reversal of 20366573623 is 32637566302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20366573623 - 2³³ = 11776639031 is a prime.

It is a super-2 number, since 2×20366573623² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20366573623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20366573629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40249893 + ... + 40250398.

It is an arithmetic number, because the mean of its divisors is an integer number (2898010512).

Almost surely, 2^20366573623 is an apocalyptic number.

20366573623 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

20366573623 is a deficient number, since it is larger than the sum of its proper divisors (2817510473).

20366573623 is a wasteful number, since it uses less digits than its factorization.

20366573623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80500325.

The product of its (nonzero) digits is 816480, while the sum is 43.

The spelling of 20366573623 in words is "twenty billion, three hundred sixty-six million, five hundred seventy-three thousand, six hundred twenty-three".