23145044555 has 16 divisors (see below), whose sum is σ = 28988587584. Its totient is φ = 17706733440.

The previous prime is 23145044551. The next prime is 23145044561. The reversal of 23145044555 is 55544054132.

It is not a de Polignac number, because 23145044555 - 2² = 23145044551 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23145044551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 506765 + ... + 550545.

It is an arithmetic number, because the mean of its divisors is an integer number (1811786724).

Almost surely, 2^23145044555 is an apocalyptic number.

23145044555 is a deficient number, since it is larger than the sum of its proper divisors (5843543029).

23145044555 is a wasteful number, since it uses less digits than its factorization.

23145044555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48406.

The product of its (nonzero) digits is 240000, while the sum is 38.

Adding to 23145044555 its reverse (55544054132), we get a palindrome (78689098687).

The spelling of 23145044555 in words is "twenty-three billion, one hundred forty-five million, forty-four thousand, five hundred fifty-five".