870641434007873 has 4 divisors (see below), whose sum is σ = 949790655281328. Its totient is φ = 791492212734420.

The previous prime is 870641434007833. The next prime is 870641434007887. The reversal of 870641434007873 is 378700434146078.

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 a cyclic number.

It is not a de Polignac number, because 870641434007873 - 2¹⁴ = 870641433991489 is a prime.

It is a super-2 number, since 2×870641434007873² (a number of 31 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (870641434007833) 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, 39574610636711 + ... + 39574610636732.

It is an arithmetic number, because the mean of its divisors is an integer number (237447663820332).

Almost surely, 2^{870641434007873} is an apocalyptic number.

It is an amenable number.

870641434007873 is a deficient number, since it is larger than the sum of its proper divisors (79149221273455).

870641434007873 is a wasteful number, since it uses less digits than its factorization.

870641434007873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79149221273454.

The product of its (nonzero) digits is 75866112, while the sum is 62.

The spelling of 870641434007873 in words is "eight hundred seventy trillion, six hundred forty-one billion, four hundred thirty-four million, seven thousand, eight hundred seventy-three".