15696481536 has 144 divisors (see below), whose sum is σ = 48018465600. Its totient is φ = 5051676672.

The previous prime is 15696481519. The next prime is 15696481543. The reversal of 15696481536 is 63518469651.

15696481536 is a `hidden beast` number, since 1 + 5 + 69 + 6 + 48 + 1 + 536 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 161295 + ... + 239601.

Almost surely, 2^15696481536 is an apocalyptic number.

15696481536 is a gapful number since it is divisible by the number (16) 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 15696481536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24009232800).

15696481536 is an abundant number, since it is smaller than the sum of its proper divisors (32321984064).

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

15696481536 is an equidigital number, since it uses as much as digits as its factorization.

15696481536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78361 (or 78341 counting only the distinct ones).

The product of its digits is 4665600, while the sum is 54.

The spelling of 15696481536 in words is "fifteen billion, six hundred ninety-six million, four hundred eighty-one thousand, five hundred thirty-six".