70837572217 has 4 divisors (see below), whose sum is σ = 71024479120. Its totient is φ = 70650665316.

The previous prime is 70837572209. The next prime is 70837572269. The reversal of 70837572217 is 71227573807.

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 70837572217 - 2³ = 70837572209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70837572517) 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, 93452883 + ... + 93453640.

It is an arithmetic number, because the mean of its divisors is an integer number (17756119780).

Almost surely, 2^70837572217 is an apocalyptic number.

It is an amenable number.

70837572217 is a deficient number, since it is larger than the sum of its proper divisors (186906903).

70837572217 is a wasteful number, since it uses less digits than its factorization.

70837572217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186906902.

The product of its (nonzero) digits is 1152480, while the sum is 49.

The spelling of 70837572217 in words is "seventy billion, eight hundred thirty-seven million, five hundred seventy-two thousand, two hundred seventeen".