15293139489 has 12 divisors (see below), whose sum is σ = 22091204772. Its totient is φ = 10194912000.

The previous prime is 15293139469. The next prime is 15293139527. The reversal of 15293139489 is 98493139251.

15293139489 is a `hidden beast` number, since 1 + 5 + 29 + 3 + 139 + 489 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 3540845025 + 11752294464 = 59505^2 + 108408^2 .

It is not a de Polignac number, because 15293139489 - 2⁹ = 15293138977 is a prime.

It is a super-2 number, since 2×15293139489² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (15293139439) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 252789 + ... + 307389.

It is an arithmetic number, because the mean of its divisors is an integer number (1840933731).

Almost surely, 2^15293139489 is an apocalyptic number.

It is an amenable number.

15293139489 is a deficient number, since it is larger than the sum of its proper divisors (6798065283).

15293139489 is a wasteful number, since it uses less digits than its factorization.

15293139489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85728 (or 85725 counting only the distinct ones).

The product of its digits is 2099520, while the sum is 54.

The spelling of 15293139489 in words is "fifteen billion, two hundred ninety-three million, one hundred thirty-nine thousand, four hundred eighty-nine".