870430242691 has 4 divisors (see below), whose sum is σ = 872622762592. Its totient is φ = 868237722792.

The previous prime is 870430242673. The next prime is 870430242697. The reversal of 870430242691 is 196242034078.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 870430242691 - 2²¹ = 870428145539 is a prime.

It is a super-2 number, since 2×870430242691² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (870430242697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1096259355 + ... + 1096260148.

It is an arithmetic number, because the mean of its divisors is an integer number (218155690648).

Almost surely, 2^870430242691 is an apocalyptic number.

870430242691 is a deficient number, since it is larger than the sum of its proper divisors (2192519901).

870430242691 is a wasteful number, since it uses less digits than its factorization.

870430242691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2192519900.

The product of its (nonzero) digits is 580608, while the sum is 46.

The spelling of 870430242691 in words is "eight hundred seventy billion, four hundred thirty million, two hundred forty-two thousand, six hundred ninety-one".