34778872379 has 4 divisors (see below), whose sum is σ = 35900771520. Its totient is φ = 33656973240.

The previous prime is 34778872343. The next prime is 34778872393. The reversal of 34778872379 is 97327887743.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 34778872379 - 2²⁴ = 34762095163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (34778872319) 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, 560949524 + ... + 560949585.

It is an arithmetic number, because the mean of its divisors is an integer number (8975192880).

Almost surely, 2^34778872379 is an apocalyptic number.

34778872379 is a deficient number, since it is larger than the sum of its proper divisors (1121899141).

34778872379 is a wasteful number, since it uses less digits than its factorization.

34778872379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1121899140.

The product of its digits is 99574272, while the sum is 65.

The spelling of 34778872379 in words is "thirty-four billion, seven hundred seventy-eight million, eight hundred seventy-two thousand, three hundred seventy-nine".