23015105551 has 2 divisors, whose sum is σ = 23015105552. Its totient is φ = 23015105550.

The previous prime is 23015105539. The next prime is 23015105567. The reversal of 23015105551 is 15550151032.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23015105551 - 2⁷ = 23015105423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23015105521) 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 as a sum of consecutive naturals, namely, 11507552775 + 11507552776.

It is an arithmetic number, because the mean of its divisors is an integer number (11507552776).

Almost surely, 2^23015105551 is an apocalyptic number.

23015105551 is a deficient number, since it is larger than the sum of its proper divisors (1).

23015105551 is an equidigital number, since it uses as much as digits as its factorization.

23015105551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3750, while the sum is 28.

Adding to 23015105551 its reverse (15550151032), we get a palindrome (38565256583).

The spelling of 23015105551 in words is "twenty-three billion, fifteen million, one hundred five thousand, five hundred fifty-one".