15540312342 has 16 divisors (see below), whose sum is σ = 32431956480. Its totient is φ = 4954882152.

The previous prime is 15540312311. The next prime is 15540312367. The reversal of 15540312342 is 24321304551.

15540312342 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56305342 + ... + 56305617.

It is an arithmetic number, because the mean of its divisors is an integer number (2026997280).

Almost surely, 2^15540312342 is an apocalyptic number.

15540312342 is an abundant number, since it is smaller than the sum of its proper divisors (16891644138).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15540312342 is a wasteful number, since it uses less digits than its factorization.

15540312342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112610987.

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 15540312342 its reverse (24321304551), we get a palindrome (39861616893).

The spelling of 15540312342 in words is "fifteen billion, five hundred forty million, three hundred twelve thousand, three hundred forty-two".