70828771091 has 8 divisors (see below), whose sum is σ = 76301922480. Its totient is φ = 65359160352.

The previous prime is 70828771087. The next prime is 70828771099. The reversal of 70828771091 is 19017782807.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 70828771091 - 2² = 70828771087 is a prime.

It is a super-2 number, since 2×70828771091² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70828771099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 843536 + ... + 923693.

It is an arithmetic number, because the mean of its divisors is an integer number (9537740310).

Almost surely, 2^70828771091 is an apocalyptic number.

70828771091 is a deficient number, since it is larger than the sum of its proper divisors (5473151389).

70828771091 is a wasteful number, since it uses less digits than its factorization.

70828771091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1770325.

The product of its (nonzero) digits is 395136, while the sum is 50.

The spelling of 70828771091 in words is "seventy billion, eight hundred twenty-eight million, seven hundred seventy-one thousand, ninety-one".