15803678412 has 216 divisors, whose sum is σ = 44208615360. Its totient is φ = 4746107520.

The previous prime is 15803678369. The next prime is 15803678447. The reversal of 15803678412 is 21487630851.

15803678412 is a `hidden beast` number, since 1 + 580 + 3 + 67 + 8 + 4 + 1 + 2 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 47745087 + ... + 47745417.

Almost surely, 2^15803678412 is an apocalyptic number.

15803678412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15803678412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22104307680).

15803678412 is an abundant number, since it is smaller than the sum of its proper divisors (28404936948).

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

15803678412 is a wasteful number, since it uses less digits than its factorization.

15803678412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501 (or 467 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The spelling of 15803678412 in words is "fifteen billion, eight hundred three million, six hundred seventy-eight thousand, four hundred twelve".