23215505454 has 24 divisors (see below), whose sum is σ = 50409391032. Its totient is φ = 7721712720.

The previous prime is 23215505413. The next prime is 23215505483. The reversal of 23215505454 is 45450551232.

23215505454 is a `hidden beast` number, since 2 + 3 + 2 + 1 + 550 + 54 + 54 = 666.

It is a super-2 number, since 2×23215505454² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1390564 + ... + 1407159.

It is an arithmetic number, because the mean of its divisors is an integer number (2100391293).

Almost surely, 2^23215505454 is an apocalyptic number.

23215505454 is an abundant number, since it is smaller than the sum of its proper divisors (27193885578).

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

23215505454 is a wasteful number, since it uses less digits than its factorization.

23215505454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2798192 (or 2798189 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 36.

The spelling of 23215505454 in words is "twenty-three billion, two hundred fifteen million, five hundred five thousand, four hundred fifty-four".