15120332551 has 2 divisors, whose sum is σ = 15120332552. Its totient is φ = 15120332550.

The previous prime is 15120332527. The next prime is 15120332561. The reversal of 15120332551 is 15523302151.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 15120332551 - 2⁵ = 15120332519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15120332501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7560166275 + 7560166276.

It is an arithmetic number, because the mean of its divisors is an integer number (7560166276).

Almost surely, 2^15120332551 is an apocalyptic number.

15120332551 is a deficient number, since it is larger than the sum of its proper divisors (1).

15120332551 is an equidigital number, since it uses as much as digits as its factorization.

15120332551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4500, while the sum is 28.

The spelling of 15120332551 in words is "fifteen billion, one hundred twenty million, three hundred thirty-two thousand, five hundred fifty-one".