23509220833 has 24 divisors (see below), whose sum is σ = 27779748000. Its totient is φ = 19833387840.

The previous prime is 23509220773. The next prime is 23509220869. The reversal of 23509220833 is 33802290532.

It is not a de Polignac number, because 23509220833 - 2²¹ = 23507123681 is a prime.

It is a super-2 number, since 2×23509220833² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23509220792 and 23509220801.

It is not an unprimeable number, because it can be changed into a prime (23509220893) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1778338 + ... + 1791508.

It is an arithmetic number, because the mean of its divisors is an integer number (1157489500).

Almost surely, 2^23509220833 is an apocalyptic number.

It is an amenable number.

23509220833 is a deficient number, since it is larger than the sum of its proper divisors (4270527167).

23509220833 is a wasteful number, since it uses less digits than its factorization.

23509220833 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13757 (or 13750 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 37.

The spelling of 23509220833 in words is "twenty-three billion, five hundred nine million, two hundred twenty thousand, eight hundred thirty-three".