17872670873 has 6 divisors (see below), whose sum is σ = 17912074446. Its totient is φ = 17833353792.

The previous prime is 17872670869. The next prime is 17872670899. The reversal of 17872670873 is 37807627871.

It can be written as a sum of positive squares in 3 ways, for example, as 7608549529 + 10264121344 = 87227^2 + 101312^2 .

It is not a de Polignac number, because 17872670873 - 2² = 17872670869 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (17872670573) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 166061 + ... + 251637.

It is an arithmetic number, because the mean of its divisors is an integer number (2985345741).

Almost surely, 2^17872670873 is an apocalyptic number.

It is an amenable number.

17872670873 is a deficient number, since it is larger than the sum of its proper divisors (39403573).

17872670873 is an frugal number, since it uses more digits than its factorization.

17872670873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86491 (or 86034 counting only the distinct ones).

The product of its (nonzero) digits is 5531904, while the sum is 56.

The spelling of 17872670873 in words is "seventeen billion, eight hundred seventy-two million, six hundred seventy thousand, eight hundred seventy-three".