15140434454 has 4 divisors (see below), whose sum is σ = 22710651684. Its totient is φ = 7570217226.

The previous prime is 15140434453. The next prime is 15140434489. The reversal of 15140434454 is 45443404151.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15140434453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3785108612 + ... + 3785108615.

It is an arithmetic number, because the mean of its divisors is an integer number (5677662921).

Almost surely, 2^15140434454 is an apocalyptic number.

15140434454 is a deficient number, since it is larger than the sum of its proper divisors (7570217230).

15140434454 is an equidigital number, since it uses as much as digits as its factorization.

15140434454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7570217229.

The product of its (nonzero) digits is 76800, while the sum is 35.

The spelling of 15140434454 in words is "fifteen billion, one hundred forty million, four hundred thirty-four thousand, four hundred fifty-four".