78411660056 has 32 divisors (see below), whose sum is σ = 147397017600. Its totient is φ = 39105868320.

The previous prime is 78411660043. The next prime is 78411660079. The reversal of 78411660056 is 65006611487.

It is a super-2 number, since 2×78411660056² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78411659989 and 78411660016.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 12761321 + ... + 12767463.

It is an arithmetic number, because the mean of its divisors is an integer number (4606156800).

Almost surely, 2^78411660056 is an apocalyptic number.

It is an amenable number.

78411660056 is a deficient number, since it is larger than the sum of its proper divisors (68985357544).

78411660056 is a wasteful number, since it uses less digits than its factorization.

78411660056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9959 (or 9955 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 44.

The spelling of 78411660056 in words is "seventy-eight billion, four hundred eleven million, six hundred sixty thousand, fifty-six".