23254778655 has 12 divisors (see below), whose sum is σ = 40308283080. Its totient is φ = 12402548592.

The previous prime is 23254778653. The next prime is 23254778671. The reversal of 23254778655 is 55687745232.

23254778655 is a `hidden beast` number, since 2 + 32 + 547 + 7 + 8 + 65 + 5 = 666.

It is not a de Polignac number, because 23254778655 - 2¹ = 23254778653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23254778653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 258386385 + ... + 258386474.

It is an arithmetic number, because the mean of its divisors is an integer number (3359023590).

Almost surely, 2^23254778655 is an apocalyptic number.

23254778655 is a deficient number, since it is larger than the sum of its proper divisors (17053504425).

23254778655 is a wasteful number, since it uses less digits than its factorization.

23254778655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516772870 (or 516772867 counting only the distinct ones).

The product of its digits is 14112000, while the sum is 54.

The spelling of 23254778655 in words is "twenty-three billion, two hundred fifty-four million, seven hundred seventy-eight thousand, six hundred fifty-five".