78944196927729 has 32 divisors (see below), whose sum is σ = 120603070808064. Its totient is φ = 44995847944320.

The previous prime is 78944196927719. The next prime is 78944196927731. The reversal of 78944196927729 is 92772969144987.

It is not a de Polignac number, because 78944196927729 - 2⁷ = 78944196927601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78944196927719) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30295237 + ... + 32797709.

It is an arithmetic number, because the mean of its divisors is an integer number (3768845962752).

Almost surely, 2^{78944196927729} is an apocalyptic number.

It is an amenable number.

78944196927729 is a deficient number, since it is larger than the sum of its proper divisors (41658873880335).

78944196927729 is a wasteful number, since it uses less digits than its factorization.

78944196927729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2506317.

The product of its digits is 6913299456, while the sum is 84.

The spelling of 78944196927729 in words is "seventy-eight trillion, nine hundred forty-four billion, one hundred ninety-six million, nine hundred twenty-seven thousand, seven hundred twenty-nine".