15535040551 has 2 divisors, whose sum is σ = 15535040552. Its totient is φ = 15535040550.

The previous prime is 15535040503. The next prime is 15535040561. The reversal of 15535040551 is 15504053551.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 15535040551 - 2¹⁷ = 15534909479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15535040501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7767520275 + 7767520276.

It is an arithmetic number, because the mean of its divisors is an integer number (7767520276).

Almost surely, 2^15535040551 is an apocalyptic number.

15535040551 is a deficient number, since it is larger than the sum of its proper divisors (1).

15535040551 is an equidigital number, since it uses as much as digits as its factorization.

15535040551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37500, while the sum is 34.

The spelling of 15535040551 in words is "fifteen billion, five hundred thirty-five million, forty thousand, five hundred fifty-one".