23015401515420 has 96 divisors (see below), whose sum is σ = 64641649121280. Its totient is φ = 6118562104320.

The previous prime is 23015401515391. The next prime is 23015401515433. The reversal of 23015401515420 is 2451510451032.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25132185 + ... + 26031855.

It is an arithmetic number, because the mean of its divisors is an integer number (673350511680).

Almost surely, 2^{23015401515420} is an apocalyptic number.

23015401515420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23015401515420 is an abundant number, since it is smaller than the sum of its proper divisors (41626247605860).

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

23015401515420 is a wasteful number, since it uses less digits than its factorization.

23015401515420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 900995 (or 900993 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 33.

Adding to 23015401515420 its reverse (2451510451032), we get a palindrome (25466911966452).

The spelling of 23015401515420 in words is "twenty-three trillion, fifteen billion, four hundred one million, five hundred fifteen thousand, four hundred twenty".