15272878651 has 2 divisors, whose sum is σ = 15272878652. Its totient is φ = 15272878650.

The previous prime is 15272878639. The next prime is 15272878667. The reversal of 15272878651 is 15687827251.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 15272878651 - 2²⁷ = 15138660923 is a prime.

It is not a weakly prime, because it can be changed into another prime (15272878351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7636439325 + 7636439326.

It is an arithmetic number, because the mean of its divisors is an integer number (7636439326).

Almost surely, 2^15272878651 is an apocalyptic number.

15272878651 is a deficient number, since it is larger than the sum of its proper divisors (1).

15272878651 is an equidigital number, since it uses as much as digits as its factorization.

15272878651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1881600, while the sum is 52.

The spelling of 15272878651 in words is "fifteen billion, two hundred seventy-two million, eight hundred seventy-eight thousand, six hundred fifty-one".