78957671683 has 4 divisors (see below), whose sum is σ = 86135641848. Its totient is φ = 71779701520.

The previous prime is 78957671633. The next prime is 78957671687. The reversal of 78957671683 is 38617675987.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 78957671683 - 2¹⁷ = 78957540611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78957671687) 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 3 ways as a sum of consecutive naturals, for example, 3588985066 + ... + 3588985087.

It is an arithmetic number, because the mean of its divisors is an integer number (21533910462).

Almost surely, 2^78957671683 is an apocalyptic number.

78957671683 is a deficient number, since it is larger than the sum of its proper divisors (7177970165).

78957671683 is a wasteful number, since it uses less digits than its factorization.

78957671683 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7177970164.

The product of its digits is 106686720, while the sum is 67.

The spelling of 78957671683 in words is "seventy-eight billion, nine hundred fifty-seven million, six hundred seventy-one thousand, six hundred eighty-three".