15123012653 has 4 divisors (see below), whose sum is σ = 17283443040. Its totient is φ = 12962582268.

The previous prime is 15123012649. The next prime is 15123012719. The reversal of 15123012653 is 35621032151.

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.

It is a cyclic number.

It is not a de Polignac number, because 15123012653 - 2² = 15123012649 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 (15123012353) 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, 1080215183 + ... + 1080215196.

It is an arithmetic number, because the mean of its divisors is an integer number (4320860760).

Almost surely, 2^15123012653 is an apocalyptic number.

It is an amenable number.

15123012653 is a deficient number, since it is larger than the sum of its proper divisors (2160430387).

15123012653 is an equidigital number, since it uses as much as digits as its factorization.

15123012653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2160430386.

The product of its (nonzero) digits is 5400, while the sum is 29.

The spelling of 15123012653 in words is "fifteen billion, one hundred twenty-three million, twelve thousand, six hundred fifty-three".