20233525511 has 12 divisors (see below), whose sum is σ = 21501223920. Its totient is φ = 19036692480.

The previous prime is 20233525489. The next prime is 20233525513. The reversal of 20233525511 is 11552533202.

It is a de Polignac number, because none of the positive numbers 2^k-20233525511 is a prime.

It is a super-2 number, since 2×20233525511² (a number of 21 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 (20233525513) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 951566 + ... + 972596.

It is an arithmetic number, because the mean of its divisors is an integer number (1791768660).

Almost surely, 2^20233525511 is an apocalyptic number.

20233525511 is a deficient number, since it is larger than the sum of its proper divisors (1267698409).

20233525511 is a wasteful number, since it uses less digits than its factorization.

20233525511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24394 (or 24377 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 29.

The spelling of 20233525511 in words is "twenty billion, two hundred thirty-three million, five hundred twenty-five thousand, five hundred eleven".