70564091705 has 4 divisors (see below), whose sum is σ = 84676910052. Its totient is φ = 56451273360.

The previous prime is 70564091699. The next prime is 70564091753. The reversal of 70564091705 is 50719046507.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50719046507 = 73 ⋅694781459.

It can be written as a sum of positive squares in 2 ways, for example, as 37798747561 + 32765344144 = 194419^2 + 181012^2 .

It is not a de Polignac number, because 70564091705 - 2¹² = 70564087609 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7056409166 + ... + 7056409175.

It is an arithmetic number, because the mean of its divisors is an integer number (21169227513).

Almost surely, 2^70564091705 is an apocalyptic number.

It is an amenable number.

70564091705 is a deficient number, since it is larger than the sum of its proper divisors (14112818347).

70564091705 is a wasteful number, since it uses less digits than its factorization.

70564091705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14112818346.

The product of its (nonzero) digits is 264600, while the sum is 44.

The spelling of 70564091705 in words is "seventy billion, five hundred sixty-four million, ninety-one thousand, seven hundred five".