15102665551 has 4 divisors (see below), whose sum is σ = 15258363232. Its totient is φ = 14946967872.

The previous prime is 15102665471. The next prime is 15102665579. The reversal of 15102665551 is 15556620151.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15556620151 = 17 ⋅915095303.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15102665551 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 15102665551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15102665051) 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, 77848695 + ... + 77848888.

It is an arithmetic number, because the mean of its divisors is an integer number (3814590808).

Almost surely, 2^15102665551 is an apocalyptic number.

15102665551 is a deficient number, since it is larger than the sum of its proper divisors (155697681).

15102665551 is an equidigital number, since it uses as much as digits as its factorization.

15102665551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155697680.

The product of its (nonzero) digits is 45000, while the sum is 37.

The spelling of 15102665551 in words is "fifteen billion, one hundred two million, six hundred sixty-five thousand, five hundred fifty-one".