78923294349 has 4 divisors (see below), whose sum is σ = 105231059136. Its totient is φ = 52615529564.

The previous prime is 78923294341. The next prime is 78923294383. The reversal of 78923294349 is 94349232987.

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 78923294349 - 2³ = 78923294341 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 78923294292 and 78923294301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78923294341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13153882389 + ... + 13153882394.

It is an arithmetic number, because the mean of its divisors is an integer number (26307764784).

Almost surely, 2^78923294349 is an apocalyptic number.

It is an amenable number.

78923294349 is a deficient number, since it is larger than the sum of its proper divisors (26307764787).

78923294349 is a wasteful number, since it uses less digits than its factorization.

78923294349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26307764786.

The product of its digits is 23514624, while the sum is 60.

The spelling of 78923294349 in words is "seventy-eight billion, nine hundred twenty-three million, two hundred ninety-four thousand, three hundred forty-nine".