15270597891 has 6 divisors (see below), whose sum is σ = 22057530300. Its totient is φ = 10180398588.

The previous prime is 15270597883. The next prime is 15270597893. The reversal of 15270597891 is 19879507251.

It is not a de Polignac number, because 15270597891 - 2³ = 15270597883 is a prime.

It is a super-2 number, since 2×15270597891² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (15270597893) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 848366541 + ... + 848366558.

It is an arithmetic number, because the mean of its divisors is an integer number (3676255050).

Almost surely, 2^15270597891 is an apocalyptic number.

15270597891 is a deficient number, since it is larger than the sum of its proper divisors (6786932409).

15270597891 is a wasteful number, since it uses less digits than its factorization.

15270597891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1696733105 (or 1696733102 counting only the distinct ones).

The product of its (nonzero) digits is 1587600, while the sum is 54.

The spelling of 15270597891 in words is "fifteen billion, two hundred seventy million, five hundred ninety-seven thousand, eight hundred ninety-one".