78790969234 has 4 divisors (see below), whose sum is σ = 118186453854. Its totient is φ = 39395484616.

The previous prime is 78790969171. The next prime is 78790969241. The reversal of 78790969234 is 43296909787.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43296909787 = 37 ⋅1170186751.

It can be written as a sum of positive squares in only one way, i.e., 78738043609 + 52925625 = 280603^2 + 7275^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 19697742307 + ... + 19697742310.

Almost surely, 2^78790969234 is an apocalyptic number.

78790969234 is a deficient number, since it is larger than the sum of its proper divisors (39395484620).

78790969234 is a wasteful number, since it uses less digits than its factorization.

78790969234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39395484619.

The product of its (nonzero) digits is 41150592, while the sum is 64.

The spelling of 78790969234 in words is "seventy-eight billion, seven hundred ninety million, nine hundred sixty-nine thousand, two hundred thirty-four".