23215505455 has 8 divisors (see below), whose sum is σ = 28194252912. Its totient is φ = 18348640128.

The previous prime is 23215505413. The next prime is 23215505483. The reversal of 23215505455 is 55450551232.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23215505455 - 2⁹ = 23215504943 is a prime.

It is a super-2 number, since 2×23215505455² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

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, 27970074 + ... + 27970903.

It is an arithmetic number, because the mean of its divisors is an integer number (3524281614).

Almost surely, 2^23215505455 is an apocalyptic number.

23215505455 is a deficient number, since it is larger than the sum of its proper divisors (4978747457).

23215505455 is an equidigital number, since it uses as much as digits as its factorization.

23215505455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55941065.

The product of its (nonzero) digits is 150000, while the sum is 37.

The spelling of 23215505455 in words is "twenty-three billion, two hundred fifteen million, five hundred five thousand, four hundred fifty-five".