80829078877 has 2 divisors, whose sum is σ = 80829078878. Its totient is φ = 80829078876.

The previous prime is 80829078859. The next prime is 80829078899. The reversal of 80829078877 is 77887092808.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77651952921 + 3177125956 = 278661^2 + 56366^2 .

It is a cyclic number.

It is not a de Polignac number, because 80829078877 - 2⁷ = 80829078749 is a prime.

It is a super-2 number, since 2×80829078877² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80829778877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40414539438 + 40414539439.

It is an arithmetic number, because the mean of its divisors is an integer number (40414539439).

Almost surely, 2^80829078877 is an apocalyptic number.

It is an amenable number.

80829078877 is a deficient number, since it is larger than the sum of its proper divisors (1).

80829078877 is an equidigital number, since it uses as much as digits as its factorization.

80829078877 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25288704, while the sum is 64.

The spelling of 80829078877 in words is "eighty billion, eight hundred twenty-nine million, seventy-eight thousand, eight hundred seventy-seven".