23421012955 has 4 divisors (see below), whose sum is σ = 28105215552. Its totient is φ = 18736810360.

The previous prime is 23421012949. The next prime is 23421012959. The reversal of 23421012955 is 55921012432.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-23421012955 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23421012955.

It is not an unprimeable number, because it can be changed into a prime (23421012959) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2342101291 + ... + 2342101300.

It is an arithmetic number, because the mean of its divisors is an integer number (7026303888).

Almost surely, 2^23421012955 is an apocalyptic number.

23421012955 is a deficient number, since it is larger than the sum of its proper divisors (4684202597).

23421012955 is an equidigital number, since it uses as much as digits as its factorization.

23421012955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4684202596.

The product of its (nonzero) digits is 21600, while the sum is 34.

The spelling of 23421012955 in words is "twenty-three billion, four hundred twenty-one million, twelve thousand, nine hundred fifty-five".