870940170947 has 24 divisors (see below), whose sum is σ = 1105603145712. Its totient is φ = 678430233600.

The previous prime is 870940170901. The next prime is 870940170949. The reversal of 870940170947 is 749071049078.

It is not a de Polignac number, because 870940170947 - 2²² = 870935976643 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 870940170892 and 870940170901.

It is not an unprimeable number, because it can be changed into a prime (870940170949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1373423 + ... + 1904775.

It is an arithmetic number, because the mean of its divisors is an integer number (46066797738).

Almost surely, 2^870940170947 is an apocalyptic number.

870940170947 is a deficient number, since it is larger than the sum of its proper divisors (234662974765).

870940170947 is a wasteful number, since it uses less digits than its factorization.

870940170947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534419 (or 534412 counting only the distinct ones).

The product of its (nonzero) digits is 3556224, while the sum is 56.

The spelling of 870940170947 in words is "eight hundred seventy billion, nine hundred forty million, one hundred seventy thousand, nine hundred forty-seven".