80857373137 has 2 divisors, whose sum is σ = 80857373138. Its totient is φ = 80857373136.

The previous prime is 80857373087. The next prime is 80857373189. The reversal of 80857373137 is 73137375808.

It is an a-pointer prime, because the next prime (80857373189) can be obtained adding 80857373137 to its sum of digits (52).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78835162176 + 2022210961 = 280776^2 + 44969^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80857373137 is a prime.

It is not a weakly prime, because it can be changed into another prime (80857373197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40428686568 + 40428686569.

It is an arithmetic number, because the mean of its divisors is an integer number (40428686569).

Almost surely, 2^80857373137 is an apocalyptic number.

It is an amenable number.

80857373137 is a deficient number, since it is larger than the sum of its proper divisors (1).

80857373137 is an equidigital number, since it uses as much as digits as its factorization.

80857373137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2963520, while the sum is 52.

The spelling of 80857373137 in words is "eighty billion, eight hundred fifty-seven million, three hundred seventy-three thousand, one hundred thirty-seven".