34047639817 has 4 divisors (see below), whose sum is σ = 35839620880. Its totient is φ = 32255658756.

The previous prime is 34047639809. The next prime is 34047639827. The reversal of 34047639817 is 71893674043.

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, and also an emirpimes, since its reverse is a distinct semiprime: 71893674043 = 211 ⋅340728313.

It is a cyclic number.

It is not a de Polignac number, because 34047639817 - 2³ = 34047639809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (34047639827) 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, 895990503 + ... + 895990540.

It is an arithmetic number, because the mean of its divisors is an integer number (8959905220).

Almost surely, 2^34047639817 is an apocalyptic number.

It is an amenable number.

34047639817 is a deficient number, since it is larger than the sum of its proper divisors (1791981063).

34047639817 is a wasteful number, since it uses less digits than its factorization.

34047639817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1791981062.

The product of its (nonzero) digits is 3048192, while the sum is 52.

The spelling of 34047639817 in words is "thirty-four billion, forty-seven million, six hundred thirty-nine thousand, eight hundred seventeen".