23040442551 has 32 divisors (see below), whose sum is σ = 36672629760. Its totient is φ = 12588516864.

The previous prime is 23040442547. The next prime is 23040442559. The reversal of 23040442551 is 15524404032.

It is not a de Polignac number, because 23040442551 - 2² = 23040442547 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23040442559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 120930 + ... + 246383.

It is an arithmetic number, because the mean of its divisors is an integer number (1146019680).

Almost surely, 2^23040442551 is an apocalyptic number.

23040442551 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

23040442551 is a deficient number, since it is larger than the sum of its proper divisors (13632187209).

23040442551 is a wasteful number, since it uses less digits than its factorization.

23040442551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367455.

The product of its (nonzero) digits is 19200, while the sum is 30.

Adding to 23040442551 its reverse (15524404032), we get a palindrome (38564846583).

The spelling of 23040442551 in words is "twenty-three billion, forty million, four hundred forty-two thousand, five hundred fifty-one".