23166054551 has 4 divisors (see below), whose sum is σ = 24385320600. Its totient is φ = 21946788504.

The previous prime is 23166054539. The next prime is 23166054559. The reversal of 23166054551 is 15545066132.

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

It is a cyclic number.

It is not a de Polignac number, because 23166054551 - 2⁶ = 23166054487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23166054559) 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 3 ways as a sum of consecutive naturals, for example, 609632996 + ... + 609633033.

It is an arithmetic number, because the mean of its divisors is an integer number (6096330150).

Almost surely, 2^23166054551 is an apocalyptic number.

23166054551 is a deficient number, since it is larger than the sum of its proper divisors (1219266049).

23166054551 is a wasteful number, since it uses less digits than its factorization.

23166054551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1219266048.

The product of its (nonzero) digits is 108000, while the sum is 38.

The spelling of 23166054551 in words is "twenty-three billion, one hundred sixty-six million, fifty-four thousand, five hundred fifty-one".