80857373101 has 4 divisors (see below), whose sum is σ = 80861363100. Its totient is φ = 80853383104.

The previous prime is 80857373087. The next prime is 80857373137. The reversal of 80857373101 is 10137375808.

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 31293256201 + 49564116900 = 176899^2 + 222630^2 .

It is a cyclic number.

It is not a de Polignac number, because 80857373101 - 2¹³ = 80857364909 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 (80857376101) 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, 1964446 + ... + 2005183.

It is an arithmetic number, because the mean of its divisors is an integer number (20215340775).

Almost surely, 2^80857373101 is an apocalyptic number.

It is an amenable number.

80857373101 is a deficient number, since it is larger than the sum of its proper divisors (3989999).

80857373101 is a wasteful number, since it uses less digits than its factorization.

80857373101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3989998.

The product of its (nonzero) digits is 141120, while the sum is 43.

The spelling of 80857373101 in words is "eighty billion, eight hundred fifty-seven million, three hundred seventy-three thousand, one hundred one".