78717977701 has 8 divisors (see below), whose sum is σ = 86421128544. Its totient is φ = 71105988720.

The previous prime is 78717977659. The next prime is 78717977713. The reversal of 78717977701 is 10777971787.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 78717977701 - 2³⁵ = 44358239333 is a prime.

It is a super-3 number, since 3×78717977701³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 78717977701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78717977731) 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 7 ways as a sum of consecutive naturals, for example, 22788655 + ... + 22792108.

It is an arithmetic number, because the mean of its divisors is an integer number (10802641068).

Almost surely, 2^78717977701 is an apocalyptic number.

It is an amenable number.

78717977701 is a deficient number, since it is larger than the sum of its proper divisors (7703150843).

78717977701 is a wasteful number, since it uses less digits than its factorization.

78717977701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45580931.

The product of its (nonzero) digits is 8470728, while the sum is 61.

The spelling of 78717977701 in words is "seventy-eight billion, seven hundred seventeen million, nine hundred seventy-seven thousand, seven hundred one".