15040504454 has 4 divisors (see below), whose sum is σ = 22560756684. Its totient is φ = 7520252226.

The previous prime is 15040504433. The next prime is 15040504513. The reversal of 15040504454 is 45440504051.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45440504051 = 7577 ⋅5997163.

It is a self number, because there is not a number n which added to its sum of digits gives 15040504454.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3760126112 + ... + 3760126115.

It is an arithmetic number, because the mean of its divisors is an integer number (5640189171).

Almost surely, 2^15040504454 is an apocalyptic number.

15040504454 is a deficient number, since it is larger than the sum of its proper divisors (7520252230).

15040504454 is an equidigital number, since it uses as much as digits as its factorization.

15040504454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7520252229.

The product of its (nonzero) digits is 32000, while the sum is 32.

The spelling of 15040504454 in words is "fifteen billion, forty million, five hundred four thousand, four hundred fifty-four".