15642142653 has 4 divisors (see below), whose sum is σ = 20856190208. Its totient is φ = 10428095100.

The previous prime is 15642142631. The next prime is 15642142679. The reversal of 15642142653 is 35624124651.

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 not a de Polignac number, because 15642142653 - 2⁶ = 15642142589 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 (15642142253) 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, 2607023773 + ... + 2607023778.

It is an arithmetic number, because the mean of its divisors is an integer number (5214047552).

Almost surely, 2^15642142653 is an apocalyptic number.

It is an amenable number.

15642142653 is a deficient number, since it is larger than the sum of its proper divisors (5214047555).

15642142653 is an equidigital number, since it uses as much as digits as its factorization.

15642142653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5214047554.

The product of its digits is 172800, while the sum is 39.

The spelling of 15642142653 in words is "fifteen billion, six hundred forty-two million, one hundred forty-two thousand, six hundred fifty-three".