870458317921 has 16 divisors (see below), whose sum is σ = 910796802048. Its totient is φ = 831035116800.

The previous prime is 870458317913. The next prime is 870458317957. The reversal of 870458317921 is 129713854078.

It is a cyclic number.

It is not a de Polignac number, because 870458317921 - 2³ = 870458317913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (870458317321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14540176 + ... + 14599918.

It is an arithmetic number, because the mean of its divisors is an integer number (56924800128).

Almost surely, 2^870458317921 is an apocalyptic number.

It is an amenable number.

870458317921 is a deficient number, since it is larger than the sum of its proper divisors (40338484127).

870458317921 is a wasteful number, since it uses less digits than its factorization.

870458317921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67392.

The product of its (nonzero) digits is 3386880, while the sum is 55.

The spelling of 870458317921 in words is "eight hundred seventy billion, four hundred fifty-eight million, three hundred seventeen thousand, nine hundred twenty-one".