34343478787 has 4 divisors (see below), whose sum is σ = 34346315016. Its totient is φ = 34340642560.

The previous prime is 34343478769. The next prime is 34343478791. The reversal of 34343478787 is 78787434343.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78787434343 = 239 ⋅329654537.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-34343478787 is a prime.

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

It is a Duffinian number.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (34343478797) 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, 1399873 + ... + 1424194.

It is an arithmetic number, because the mean of its divisors is an integer number (8586578754).

Almost surely, 2^34343478787 is an apocalyptic number.

34343478787 is a deficient number, since it is larger than the sum of its proper divisors (2836229).

34343478787 is a wasteful number, since it uses less digits than its factorization.

34343478787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2836228.

The product of its digits is 37933056, while the sum is 58.

The spelling of 34343478787 in words is "thirty-four billion, three hundred forty-three million, four hundred seventy-eight thousand, seven hundred eighty-seven".