15145469231 has 4 divisors (see below), whose sum is σ = 15284418600. Its totient is φ = 15006519864.

The previous prime is 15145469191. The next prime is 15145469243. The reversal of 15145469231 is 13296454151.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13296454151 = 29 ⋅458498419.

It is a cyclic number.

It is not a de Polignac number, because 15145469231 - 2¹⁸ = 15145207087 is a prime.

It is a super-2 number, since 2×15145469231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15145469281) 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 in 3 ways as a sum of consecutive naturals, for example, 69474521 + ... + 69474738.

It is an arithmetic number, because the mean of its divisors is an integer number (3821104650).

Almost surely, 2^15145469231 is an apocalyptic number.

15145469231 is a deficient number, since it is larger than the sum of its proper divisors (138949369).

15145469231 is a wasteful number, since it uses less digits than its factorization.

15145469231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138949368.

The product of its digits is 129600, while the sum is 41.

It can be divided in two parts, 1514 and 5469231, that added together give a palindrome (5470745).

The spelling of 15145469231 in words is "fifteen billion, one hundred forty-five million, four hundred sixty-nine thousand, two hundred thirty-one".