80977734251 has 2 divisors, whose sum is σ = 80977734252. Its totient is φ = 80977734250.

The previous prime is 80977734217. The next prime is 80977734259. The reversal of 80977734251 is 15243777908.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 80977734251 - 2²² = 80973539947 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 80977734193 and 80977734202.

It is not a weakly prime, because it can be changed into another prime (80977734259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40488867125 + 40488867126.

It is an arithmetic number, because the mean of its divisors is an integer number (40488867126).

Almost surely, 2^80977734251 is an apocalyptic number.

80977734251 is a deficient number, since it is larger than the sum of its proper divisors (1).

80977734251 is an equidigital number, since it uses as much as digits as its factorization.

80977734251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2963520, while the sum is 53.

The spelling of 80977734251 in words is "eighty billion, nine hundred seventy-seven million, seven hundred thirty-four thousand, two hundred fifty-one".