80767342665 has 12 divisors (see below), whose sum is σ = 139996727364. Its totient is φ = 43075916064.

The previous prime is 80767342657. The next prime is 80767342679. The reversal of 80767342665 is 56624376708.

80767342665 is a `hidden beast` number, since 80 + 76 + 73 + 426 + 6 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 46665072441 + 34102270224 = 216021^2 + 184668^2 .

It is not a de Polignac number, because 80767342665 - 2³ = 80767342657 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 897414874 + ... + 897414963.

It is an arithmetic number, because the mean of its divisors is an integer number (11666393947).

Almost surely, 2^80767342665 is an apocalyptic number.

It is an amenable number.

80767342665 is a deficient number, since it is larger than the sum of its proper divisors (59229384699).

80767342665 is a wasteful number, since it uses less digits than its factorization.

80767342665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1794829848 (or 1794829845 counting only the distinct ones).

The product of its (nonzero) digits is 10160640, while the sum is 54.

The spelling of 80767342665 in words is "eighty billion, seven hundred sixty-seven million, three hundred forty-two thousand, six hundred sixty-five".