78794910429 has 4 divisors (see below), whose sum is σ = 105059880576. Its totient is φ = 52529940284.

The previous prime is 78794910421. The next prime is 78794910443. The reversal of 78794910429 is 92401949787.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 78794910429 - 2³ = 78794910421 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78794910421) 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 3 ways as a sum of consecutive naturals, for example, 13132485069 + ... + 13132485074.

It is an arithmetic number, because the mean of its divisors is an integer number (26264970144).

Almost surely, 2^78794910429 is an apocalyptic number.

It is an amenable number.

78794910429 is a deficient number, since it is larger than the sum of its proper divisors (26264970147).

78794910429 is a wasteful number, since it uses less digits than its factorization.

78794910429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26264970146.

The product of its (nonzero) digits is 9144576, while the sum is 60.

The spelling of 78794910429 in words is "seventy-eight billion, seven hundred ninety-four million, nine hundred ten thousand, four hundred twenty-nine".