80408023777 has 2 divisors, whose sum is σ = 80408023778. Its totient is φ = 80408023776.

The previous prime is 80408023711. The next prime is 80408023781. The reversal of 80408023777 is 77732080408.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76686901776 + 3721122001 = 276924^2 + 61001^2 .

It is a cyclic number.

It is not a de Polignac number, because 80408023777 - 2¹⁹ = 80407499489 is a prime.

It is not a weakly prime, because it can be changed into another prime (80408029777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40204011888 + 40204011889.

It is an arithmetic number, because the mean of its divisors is an integer number (40204011889).

Almost surely, 2^80408023777 is an apocalyptic number.

It is an amenable number.

80408023777 is a deficient number, since it is larger than the sum of its proper divisors (1).

80408023777 is an equidigital number, since it uses as much as digits as its factorization.

80408023777 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 526848, while the sum is 46.

The spelling of 80408023777 in words is "eighty billion, four hundred eight million, twenty-three thousand, seven hundred seventy-seven".