14515372154 has 4 divisors (see below), whose sum is σ = 21773058234. Its totient is φ = 7257686076.

The previous prime is 14515372153. The next prime is 14515372171. The reversal of 14515372154 is 45127351541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45127351541 = 523 ⋅86285567.

It can be written as a sum of positive squares in only one way, i.e., 13464121225 + 1051250929 = 116035^2 + 32423^2 .

It is not an unprimeable number, because it can be changed into a prime (14515372153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3628843037 + ... + 3628843040.

Almost surely, 2^14515372154 is an apocalyptic number.

14515372154 is a deficient number, since it is larger than the sum of its proper divisors (7257686080).

14515372154 is an equidigital number, since it uses as much as digits as its factorization.

14515372154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7257686079.

The product of its digits is 84000, while the sum is 38.

The spelling of 14515372154 in words is "fourteen billion, five hundred fifteen million, three hundred seventy-two thousand, one hundred fifty-four".