15040432453 has 4 divisors (see below), whose sum is σ = 15062199328. Its totient is φ = 15018665580.

The previous prime is 15040432439. The next prime is 15040432483. The reversal of 15040432453 is 35423404051.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 35423404051 = 7 ⋅5060486293.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15040432453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15040432483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10882401 + ... + 10883782.

It is an arithmetic number, because the mean of its divisors is an integer number (3765549832).

Almost surely, 2^15040432453 is an apocalyptic number.

It is an amenable number.

15040432453 is a deficient number, since it is larger than the sum of its proper divisors (21766875).

15040432453 is an equidigital number, since it uses as much as digits as its factorization.

15040432453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21766874.

The product of its (nonzero) digits is 28800, while the sum is 31.

The spelling of 15040432453 in words is "fifteen billion, forty million, four hundred thirty-two thousand, four hundred fifty-three".