23001815032 has 32 divisors (see below), whose sum is σ = 49603569120. Its totient is φ = 9795127680.

The previous prime is 23001815009. The next prime is 23001815063. The reversal of 23001815032 is 23051810032.

It is a super-2 number, since 2×23001815032² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23001814988 and 23001815006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1299319 + ... + 1316902.

It is an arithmetic number, because the mean of its divisors is an integer number (1550111535).

Almost surely, 2^23001815032 is an apocalyptic number.

It is an amenable number.

23001815032 is an abundant number, since it is smaller than the sum of its proper divisors (26601754088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23001815032 is a wasteful number, since it uses less digits than its factorization.

23001815032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2616391 (or 2616387 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

Subtracting 23001815032 from its reverse (23051810032), we obtain a triangular number (49995000 = T₉₉₉₉).

The spelling of 23001815032 in words is "twenty-three billion, one million, eight hundred fifteen thousand, thirty-two".