78929293290 has 32 divisors (see below), whose sum is σ = 189717802560. Its totient is φ = 21015867264.

The previous prime is 78929293253. The next prime is 78929293363. The reversal of 78929293290 is 9239292987.

It is a Curzon number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1976419 + ... + 2015958.

It is an arithmetic number, because the mean of its divisors is an integer number (5928681330).

Almost surely, 2^78929293290 is an apocalyptic number.

78929293290 is an abundant number, since it is smaller than the sum of its proper divisors (110788509270).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78929293290 is a wasteful number, since it uses less digits than its factorization.

78929293290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3993046.

The product of its (nonzero) digits is 8817984, while the sum is 60.

The spelling of 78929293290 in words is "seventy-eight billion, nine hundred twenty-nine million, two hundred ninety-three thousand, two hundred ninety".