78774379863 has 8 divisors (see below), whose sum is σ = 105033832176. Its totient is φ = 52515590400.

The previous prime is 78774379847. The next prime is 78774379913. The reversal of 78774379863 is 36897347787.

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

It is not a de Polignac number, because 78774379863 - 2⁴ = 78774379847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78774379843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 292933 + ... + 493313.

It is an arithmetic number, because the mean of its divisors is an integer number (13129229022).

Almost surely, 2^78774379863 is an apocalyptic number.

78774379863 is a deficient number, since it is larger than the sum of its proper divisors (26259452313).

78774379863 is a wasteful number, since it uses less digits than its factorization.

78774379863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331425.

The product of its digits is 298722816, while the sum is 69.

The spelling of 78774379863 in words is "seventy-eight billion, seven hundred seventy-four million, three hundred seventy-nine thousand, eight hundred sixty-three".