15878560512 has 54 divisors (see below), whose sum is σ = 42269423308. Its totient is φ = 5291689472.

The previous prime is 15878560469. The next prime is 15878560519. The reversal of 15878560512 is 21506587851.

15878560512 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (15878560519) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 3489823 + ... + 3494369.

Almost surely, 2^15878560512 is an apocalyptic number.

15878560512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15878560512 is an abundant number, since it is smaller than the sum of its proper divisors (26390862796).

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

15878560512 is an frugal number, since it uses more digits than its factorization.

15878560512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9113 (or 4552 counting only the distinct ones).

The product of its (nonzero) digits is 672000, while the sum is 48.

Multiplying 15878560512 by its sum of digits (48), we get a square (762170904576 = 873024²).

15878560512 divided by its sum of digits (48) gives a square (330803344 = 18188²).

The spelling of 15878560512 in words is "fifteen billion, eight hundred seventy-eight million, five hundred sixty thousand, five hundred twelve".