15695899842 has 64 divisors (see below), whose sum is σ = 38003662080. Its totient is φ = 4218863616.

The previous prime is 15695899801. The next prime is 15695899853. The reversal of 15695899842 is 24899859651.

It is a happy number.

15695899842 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×15695899842² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 2473698 + ... + 2480034.

It is an arithmetic number, because the mean of its divisors is an integer number (593807220).

Almost surely, 2^15695899842 is an apocalyptic number.

15695899842 is an abundant number, since it is smaller than the sum of its proper divisors (22307762238).

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

15695899842 is a wasteful number, since it uses less digits than its factorization.

15695899842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9835.

The product of its digits is 55987200, while the sum is 66.

The spelling of 15695899842 in words is "fifteen billion, six hundred ninety-five million, eight hundred ninety-nine thousand, eight hundred forty-two".