80677333777 has 2 divisors, whose sum is σ = 80677333778. Its totient is φ = 80677333776.

The previous prime is 80677333753. The next prime is 80677333831. The reversal of 80677333777 is 77733377608.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78738604816 + 1938728961 = 280604^2 + 44031^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80677333777 is a prime.

It is not a weakly prime, because it can be changed into another prime (80677333717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40338666888 + 40338666889.

It is an arithmetic number, because the mean of its divisors is an integer number (40338666889).

Almost surely, 2^80677333777 is an apocalyptic number.

It is an amenable number.

80677333777 is a deficient number, since it is larger than the sum of its proper divisors (1).

80677333777 is an equidigital number, since it uses as much as digits as its factorization.

80677333777 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21781872, while the sum is 58.

The spelling of 80677333777 in words is "eighty billion, six hundred seventy-seven million, three hundred thirty-three thousand, seven hundred seventy-seven".