870253843917 has 4 divisors (see below), whose sum is σ = 1160338458560. Its totient is φ = 580169229276.

The previous prime is 870253843913. The next prime is 870253843937. The reversal of 870253843917 is 719348352078.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 870253843917 - 2² = 870253843913 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 (870253843913) 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, 145042307317 + ... + 145042307322.

It is an arithmetic number, because the mean of its divisors is an integer number (290084614640).

Almost surely, 2^870253843917 is an apocalyptic number.

It is an amenable number.

870253843917 is a deficient number, since it is larger than the sum of its proper divisors (290084614643).

870253843917 is a wasteful number, since it uses less digits than its factorization.

870253843917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290084614642.

The product of its (nonzero) digits is 10160640, while the sum is 57.

The spelling of 870253843917 in words is "eight hundred seventy billion, two hundred fifty-three million, eight hundred forty-three thousand, nine hundred seventeen".