15384781116 has 24 divisors (see below), whose sum is σ = 39886469840. Its totient is φ = 5128260336.

The previous prime is 15384781109. The next prime is 15384781141. The reversal of 15384781116 is 61118748351.

15384781116 is a `hidden beast` number, since 153 + 8 + 478 + 11 + 16 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71225731 + ... + 71225946.

Almost surely, 2^15384781116 is an apocalyptic number.

It is an amenable number.

15384781116 is an abundant number, since it is smaller than the sum of its proper divisors (24501688724).

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

15384781116 is a wasteful number, since it uses less digits than its factorization.

15384781116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142451690 (or 142451682 counting only the distinct ones).

The product of its digits is 161280, while the sum is 45.

The spelling of 15384781116 in words is "fifteen billion, three hundred eighty-four million, seven hundred eighty-one thousand, one hundred sixteen".