7857858606005 has 4 divisors (see below), whose sum is σ = 9429430327212. Its totient is φ = 6286286884800.

The previous prime is 7857858605969. The next prime is 7857858606019. The reversal of 7857858606005 is 5006068587587.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3503032546321 + 4354826059684 = 1871639^2 + 2086822^2 .

It is not a de Polignac number, because 7857858606005 - 2³⁶ = 7789139129269 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 785785860596 + ... + 785785860605.

It is an arithmetic number, because the mean of its divisors is an integer number (2357357581803).

Almost surely, 2^{7857858606005} is an apocalyptic number.

It is an amenable number.

7857858606005 is a deficient number, since it is larger than the sum of its proper divisors (1571571721207).

7857858606005 is a wasteful number, since it uses less digits than its factorization.

7857858606005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1571571721206.

The product of its (nonzero) digits is 112896000, while the sum is 65.

The spelling of 7857858606005 in words is "seven trillion, eight hundred fifty-seven billion, eight hundred fifty-eight million, six hundred six thousand, five".