15291152551 has 4 divisors (see below), whose sum is σ = 15291452992. Its totient is φ = 15290852112.

The previous prime is 15291152549. The next prime is 15291152563. The reversal of 15291152551 is 15525119251.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15525119251 = 68281 ⋅227371.

It is a cyclic number.

It is not a de Polignac number, because 15291152551 - 2¹ = 15291152549 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 15291152551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15291152351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52830 + ... + 182683.

It is an arithmetic number, because the mean of its divisors is an integer number (3822863248).

Almost surely, 2^15291152551 is an apocalyptic number.

15291152551 is a deficient number, since it is larger than the sum of its proper divisors (300441).

15291152551 is an equidigital number, since it uses as much as digits as its factorization.

15291152551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300440.

The product of its digits is 22500, while the sum is 37.

The spelling of 15291152551 in words is "fifteen billion, two hundred ninety-one million, one hundred fifty-two thousand, five hundred fifty-one".