15122140023 has 4 divisors (see below), whose sum is σ = 20162853368. Its totient is φ = 10081426680.

The previous prime is 15122140009. The next prime is 15122140043. The reversal of 15122140023 is 32004122151.

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

It is not a de Polignac number, because 15122140023 - 2⁶ = 15122139959 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 (15122140043) 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, 2520356668 + ... + 2520356673.

It is an arithmetic number, because the mean of its divisors is an integer number (5040713342).

Almost surely, 2^15122140023 is an apocalyptic number.

15122140023 is a deficient number, since it is larger than the sum of its proper divisors (5040713345).

15122140023 is an equidigital number, since it uses as much as digits as its factorization.

15122140023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5040713344.

The product of its (nonzero) digits is 480, while the sum is 21.

Adding to 15122140023 its reverse (32004122151), we get a palindrome (47126262174).

The spelling of 15122140023 in words is "fifteen billion, one hundred twenty-two million, one hundred forty thousand, twenty-three".