15272066987 has 4 divisors (see below), whose sum is σ = 15530915640. Its totient is φ = 15013218336.

The previous prime is 15272066959. The next prime is 15272067023. The reversal of 15272066987 is 78966027251.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15272066987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15272066947) 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, 129424238 + ... + 129424355.

It is an arithmetic number, because the mean of its divisors is an integer number (3882728910).

Almost surely, 2^15272066987 is an apocalyptic number.

15272066987 is a deficient number, since it is larger than the sum of its proper divisors (258848653).

15272066987 is an equidigital number, since it uses as much as digits as its factorization.

15272066987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258848652.

The product of its (nonzero) digits is 2540160, while the sum is 53.

The spelling of 15272066987 in words is "fifteen billion, two hundred seventy-two million, sixty-six thousand, nine hundred eighty-seven".