23032151440 has 20 divisors (see below), whose sum is σ = 53549752284. Its totient is φ = 9212860544.

The previous prime is 23032151419. The next prime is 23032151453. The reversal of 23032151440 is 4415123032.

It can be written as a sum of positive squares in 2 ways, for example, as 10548111616 + 12484039824 = 102704^2 + 111732^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143950867 + ... + 143951026.

Almost surely, 2^23032151440 is an apocalyptic number.

23032151440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23032151440 is an abundant number, since it is smaller than the sum of its proper divisors (30517600844).

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

23032151440 is a wasteful number, since it uses less digits than its factorization.

23032151440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287901906 (or 287901900 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 23032151440 its reverse (4415123032), we get a palindrome (27447274472).

The spelling of 23032151440 in words is "twenty-three billion, thirty-two million, one hundred fifty-one thousand, four hundred forty".