15313780608 has 128 divisors (see below), whose sum is σ = 49223013120. Its totient is φ = 4117979136.

The previous prime is 15313780589. The next prime is 15313780609. The reversal of 15313780608 is 80608731351.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 15313780608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15313780609) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121866 + ... + 213257.

It is an arithmetic number, because the mean of its divisors is an integer number (384554790).

Almost surely, 2^15313780608 is an apocalyptic number.

It is an amenable number.

15313780608 is an abundant number, since it is smaller than the sum of its proper divisors (33909232512).

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

15313780608 is a wasteful number, since it uses less digits than its factorization.

15313780608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335164 (or 335152 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 42.

The spelling of 15313780608 in words is "fifteen billion, three hundred thirteen million, seven hundred eighty thousand, six hundred eight".