23178000551 has 2 divisors, whose sum is σ = 23178000552. Its totient is φ = 23178000550.

The previous prime is 23178000529. The next prime is 23178000607. The reversal of 23178000551 is 15500087132.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23178000551 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23178003551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11589000275 + 11589000276.

It is an arithmetic number, because the mean of its divisors is an integer number (11589000276).

Almost surely, 2^23178000551 is an apocalyptic number.

23178000551 is a deficient number, since it is larger than the sum of its proper divisors (1).

23178000551 is an equidigital number, since it uses as much as digits as its factorization.

23178000551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8400, while the sum is 32.

Adding to 23178000551 its reverse (15500087132), we get a palindrome (38678087683).

The spelling of 23178000551 in words is "twenty-three billion, one hundred seventy-eight million, five hundred fifty-one", and thus it is an aban number.