56195639816 has 8 divisors (see below), whose sum is σ = 105366824670. Its totient is φ = 28097819904.

The previous prime is 56195639813. The next prime is 56195639869. The reversal of 56195639816 is 61893659165.

It can be written as a sum of positive squares in only one way, i.e., 49786996900 + 6408642916 = 223130^2 + 80054^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (56195639813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3512227481 + ... + 3512227496.

Almost surely, 2^56195639816 is an apocalyptic number.

It is an amenable number.

56195639816 is a deficient number, since it is larger than the sum of its proper divisors (49171184854).

56195639816 is a wasteful number, since it uses less digits than its factorization.

56195639816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7024454983 (or 7024454979 counting only the distinct ones).

The product of its digits is 10497600, while the sum is 59.

The spelling of 56195639816 in words is "fifty-six billion, one hundred ninety-five million, six hundred thirty-nine thousand, eight hundred sixteen".