15242103511 has 4 divisors (see below), whose sum is σ = 15244234432. Its totient is φ = 15239972592.

The previous prime is 15242103497. The next prime is 15242103521. The reversal of 15242103511 is 11530124251.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11530124251 = 17 ⋅678242603.

It is a cyclic number.

It is not a de Polignac number, because 15242103511 - 2⁵ = 15242103479 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 (15242103521) 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, 1054695 + ... + 1069048.

It is an arithmetic number, because the mean of its divisors is an integer number (3811058608).

Almost surely, 2^15242103511 is an apocalyptic number.

15242103511 is a deficient number, since it is larger than the sum of its proper divisors (2130921).

15242103511 is an equidigital number, since it uses as much as digits as its factorization.

15242103511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2130920.

The product of its (nonzero) digits is 1200, while the sum is 25.

Adding to 15242103511 its reverse (11530124251), we get a palindrome (26772227762).

The spelling of 15242103511 in words is "fifteen billion, two hundred forty-two million, one hundred three thousand, five hundred eleven".