78769071017 has 16 divisors (see below), whose sum is σ = 97352209920. Its totient is φ = 62061999552.

The previous prime is 78769071013. The next prime is 78769071047. The reversal of 78769071017 is 71017096787.

It is a happy number.

It is not a de Polignac number, because 78769071017 - 2² = 78769071013 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 78769071017.

It is not an unprimeable number, because it can be changed into a prime (78769071013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1789118 + ... + 1832615.

It is an arithmetic number, because the mean of its divisors is an integer number (6084513120).

Almost surely, 2^78769071017 is an apocalyptic number.

It is an amenable number.

78769071017 is a deficient number, since it is larger than the sum of its proper divisors (18583138903).

78769071017 is a wasteful number, since it uses less digits than its factorization.

78769071017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3621992.

The product of its (nonzero) digits is 1037232, while the sum is 53.

The spelling of 78769071017 in words is "seventy-eight billion, seven hundred sixty-nine million, seventy-one thousand, seventeen".