807157873645 has 4 divisors (see below), whose sum is σ = 968589448380. Its totient is φ = 645726298912.

The previous prime is 807157873601. The next prime is 807157873667. The reversal of 807157873645 is 546378751708.

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 113012285929 + 694145587716 = 336173^2 + 833154^2 .

It is a cyclic number.

It is not a de Polignac number, because 807157873645 - 2²⁷ = 807023655917 is a prime.

It is a super-3 number, since 3×807157873645³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80715787360 + ... + 80715787369.

It is an arithmetic number, because the mean of its divisors is an integer number (242147362095).

Almost surely, 2^807157873645 is an apocalyptic number.

It is an amenable number.

807157873645 is a deficient number, since it is larger than the sum of its proper divisors (161431574735).

807157873645 is a wasteful number, since it uses less digits than its factorization.

807157873645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161431574734.

The product of its (nonzero) digits is 39513600, while the sum is 61.

The spelling of 807157873645 in words is "eight hundred seven billion, one hundred fifty-seven million, eight hundred seventy-three thousand, six hundred forty-five".