78969967942 has 8 divisors (see below), whose sum is σ = 118456196256. Its totient is φ = 39484569192.

The previous prime is 78969967931. The next prime is 78969967943. The reversal of 78969967942 is 24976996987.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78969967943) 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, 162643 + ... + 429409.

It is an arithmetic number, because the mean of its divisors is an integer number (14807024532).

Almost surely, 2^78969967942 is an apocalyptic number.

78969967942 is a deficient number, since it is larger than the sum of its proper divisors (39486228314).

78969967942 is a wasteful number, since it uses less digits than its factorization.

78969967942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414782.

The product of its digits is 740710656, while the sum is 76.

The spelling of 78969967942 in words is "seventy-eight billion, nine hundred sixty-nine million, nine hundred sixty-seven thousand, nine hundred forty-two".