15787764876540 has 48 divisors (see below), whose sum is σ = 44207276067360. Its totient is φ = 4209924499200.

The previous prime is 15787764876523. The next prime is 15787764876581. The reversal of 15787764876540 is 4567846778751.

15787764876540 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 polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2818195 + ... + 6286314.

It is an arithmetic number, because the mean of its divisors is an integer number (920984918070).

Almost surely, 2^{15787764876540} is an apocalyptic number.

15787764876540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15787764876540 is an abundant number, since it is smaller than the sum of its proper divisors (28419511190820).

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

15787764876540 is a wasteful number, since it uses less digits than its factorization.

15787764876540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9133422 (or 9133420 counting only the distinct ones).

The product of its (nonzero) digits is 2212761600, while the sum is 75.

The spelling of 15787764876540 in words is "fifteen trillion, seven hundred eighty-seven billion, seven hundred sixty-four million, eight hundred seventy-six thousand, five hundred forty".