15515365242 has 32 divisors (see below), whose sum is σ = 33742171008. Its totient is φ = 4727606976.

The previous prime is 15515365237. The next prime is 15515365259. The reversal of 15515365242 is 24256351551.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 15515365242.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 957573 + ... + 973640.

It is an arithmetic number, because the mean of its divisors is an integer number (1054442844).

Almost surely, 2^15515365242 is an apocalyptic number.

15515365242 is an abundant number, since it is smaller than the sum of its proper divisors (18226805766).

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

15515365242 is a wasteful number, since it uses less digits than its factorization.

15515365242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1931334.

The product of its digits is 180000, while the sum is 39.

The spelling of 15515365242 in words is "fifteen billion, five hundred fifteen million, three hundred sixty-five thousand, two hundred forty-two".