280630690897 has 4 divisors (see below), whose sum is σ = 295400727280. Its totient is φ = 265860654516.

The previous prime is 280630690867. The next prime is 280630690909. The reversal of 280630690897 is 798096036082.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-280630690897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (280630690807) 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, 7385018163 + ... + 7385018200.

It is an arithmetic number, because the mean of its divisors is an integer number (73850181820).

Almost surely, 2^280630690897 is an apocalyptic number.

It is an amenable number.

280630690897 is a deficient number, since it is larger than the sum of its proper divisors (14770036383).

280630690897 is a wasteful number, since it uses less digits than its factorization.

280630690897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14770036382.

The product of its (nonzero) digits is 7838208, while the sum is 58.

The spelling of 280630690897 in words is "two hundred eighty billion, six hundred thirty million, six hundred ninety thousand, eight hundred ninety-seven".