78976113665 has 16 divisors (see below), whose sum is σ = 100788198912. Its totient is φ = 59202395904.

The previous prime is 78976113661. The next prime is 78976113677. The reversal of 78976113665 is 56631167987.

It is a cyclic number.

It is not a de Polignac number, because 78976113665 - 2² = 78976113661 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78976113661) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 2027249 + ... + 2065838.

It is an arithmetic number, because the mean of its divisors is an integer number (6299262432).

Almost surely, 2^78976113665 is an apocalyptic number.

It is an amenable number.

78976113665 is a deficient number, since it is larger than the sum of its proper divisors (21812085247).

78976113665 is a wasteful number, since it uses less digits than its factorization.

78976113665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4093336.

The product of its digits is 11430720, while the sum is 59.

The spelling of 78976113665 in words is "seventy-eight billion, nine hundred seventy-six million, one hundred thirteen thousand, six hundred sixty-five".