16395656878 has 16 divisors (see below), whose sum is σ = 25169077296. Its totient is φ = 8006019840.

The previous prime is 16395656863. The next prime is 16395656897. The reversal of 16395656878 is 87865659361.

It is a super-2 number, since 2×16395656878² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1118718 + ... + 1133278.

It is an arithmetic number, because the mean of its divisors is an integer number (1573067331).

Almost surely, 2^16395656878 is an apocalyptic number.

16395656878 is a deficient number, since it is larger than the sum of its proper divisors (8773420418).

16395656878 is a wasteful number, since it uses less digits than its factorization.

16395656878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27699.

The product of its digits is 65318400, while the sum is 64.

The spelling of 16395656878 in words is "sixteen billion, three hundred ninety-five million, six hundred fifty-six thousand, eight hundred seventy-eight".