15486478291 has 2 divisors, whose sum is σ = 15486478292. Its totient is φ = 15486478290.

The previous prime is 15486478283. The next prime is 15486478349. The reversal of 15486478291 is 19287468451.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 15486478291 - 2³ = 15486478283 is a prime.

It is a super-2 number, since 2×15486478291² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (15486479291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7743239145 + 7743239146.

It is an arithmetic number, because the mean of its divisors is an integer number (7743239146).

Almost surely, 2^15486478291 is an apocalyptic number.

15486478291 is a deficient number, since it is larger than the sum of its proper divisors (1).

15486478291 is an equidigital number, since it uses as much as digits as its factorization.

15486478291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3870720, while the sum is 55.

The spelling of 15486478291 in words is "fifteen billion, four hundred eighty-six million, four hundred seventy-eight thousand, two hundred ninety-one".