280599855943679 has 4 divisors (see below), whose sum is σ = 280600100929584. Its totient is φ = 280599610957776.

The previous prime is 280599855943597. The next prime is 280599855943721. The reversal of 280599855943679 is 976349558995082.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-280599855943679 is a prime.

It is a super-2 number, since 2×280599855943679² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 280599855943594 and 280599855943603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280599855933679) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120766787 + ... + 123068340.

It is an arithmetic number, because the mean of its divisors is an integer number (70150025232396).

Almost surely, 2^{280599855943679} is an apocalyptic number.

280599855943679 is a deficient number, since it is larger than the sum of its proper divisors (244985905).

280599855943679 is a wasteful number, since it uses less digits than its factorization.

280599855943679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244985904.

The product of its (nonzero) digits is 52907904000, while the sum is 89.

The spelling of 280599855943679 in words is "two hundred eighty trillion, five hundred ninety-nine billion, eight hundred fifty-five million, nine hundred forty-three thousand, six hundred seventy-nine".