15548880551 has 2 divisors, whose sum is σ = 15548880552. Its totient is φ = 15548880550.

The previous prime is 15548880533. The next prime is 15548880593. The reversal of 15548880551 is 15508884551.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 15548880551 - 2¹⁴ = 15548864167 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 15548880551.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15548880511) 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, 7774440275 + 7774440276.

It is an arithmetic number, because the mean of its divisors is an integer number (7774440276).

Almost surely, 2^15548880551 is an apocalyptic number.

15548880551 is a deficient number, since it is larger than the sum of its proper divisors (1).

15548880551 is an equidigital number, since it uses as much as digits as its factorization.

15548880551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1280000, while the sum is 50.

The spelling of 15548880551 in words is "fifteen billion, five hundred forty-eight million, eight hundred eighty thousand, five hundred fifty-one".