70191051071 has 4 divisors (see below), whose sum is σ = 70331715000. Its totient is φ = 70050387144.

The previous prime is 70191051041. The next prime is 70191051089. The reversal of 70191051071 is 17015019107.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70191051071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70191051011) 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, 70331216 + ... + 70332213.

It is an arithmetic number, because the mean of its divisors is an integer number (17582928750).

Almost surely, 2^70191051071 is an apocalyptic number.

70191051071 is a deficient number, since it is larger than the sum of its proper divisors (140663929).

70191051071 is a wasteful number, since it uses less digits than its factorization.

70191051071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140663928.

The product of its (nonzero) digits is 2205, while the sum is 32.

The spelling of 70191051071 in words is "seventy billion, one hundred ninety-one million, fifty-one thousand, seventy-one".