280897589779 has 2 divisors, whose sum is σ = 280897589780. Its totient is φ = 280897589778.

The previous prime is 280897589773. The next prime is 280897589803. The reversal of 280897589779 is 977985798082.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 280897589779 - 2³ = 280897589771 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 280897589699 and 280897589708.

It is not a weakly prime, because it can be changed into another prime (280897589771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140448794889 + 140448794890.

It is an arithmetic number, because the mean of its divisors is an integer number (140448794890).

Almost surely, 2^280897589779 is an apocalyptic number.

280897589779 is a deficient number, since it is larger than the sum of its proper divisors (1).

280897589779 is an equidigital number, since it uses as much as digits as its factorization.

280897589779 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1280240640, while the sum is 79.

The spelling of 280897589779 in words is "two hundred eighty billion, eight hundred ninety-seven million, five hundred eighty-nine thousand, seven hundred seventy-nine".