80477140777 has 40 divisors (see below), whose sum is σ = 91336222080. Its totient is φ = 70870319520.

The previous prime is 80477140741. The next prime is 80477140781. The reversal of 80477140777 is 77704177408.

It is a de Polignac number, because none of the positive numbers 2^k-80477140777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80477140787) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 73629043 + ... + 73630135.

It is an arithmetic number, because the mean of its divisors is an integer number (2283405552).

Almost surely, 2^80477140777 is an apocalyptic number.

It is an amenable number.

80477140777 is a deficient number, since it is larger than the sum of its proper divisors (10859081303).

80477140777 is a wasteful number, since it uses less digits than its factorization.

80477140777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1291 (or 1258 counting only the distinct ones).

The product of its (nonzero) digits is 2151296, while the sum is 52.

It can be divided in two parts, 804771 and 40777, that added together give a palindrome (845548).

The spelling of 80477140777 in words is "eighty billion, four hundred seventy-seven million, one hundred forty thousand, seven hundred seventy-seven".