280900135801 has 2 divisors, whose sum is σ = 280900135802. Its totient is φ = 280900135800.

The previous prime is 280900135753. The next prime is 280900135807. The reversal of 280900135801 is 108531009082.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 280318361401 + 581774400 = 529451^2 + 24120^2 .

It is a cyclic number.

It is not a de Polignac number, because 280900135801 - 2⁹ = 280900135289 is a prime.

It is not a weakly prime, because it can be changed into another prime (280900135807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140450067900 + 140450067901.

It is an arithmetic number, because the mean of its divisors is an integer number (140450067901).

Almost surely, 2^280900135801 is an apocalyptic number.

It is an amenable number.

280900135801 is a deficient number, since it is larger than the sum of its proper divisors (1).

280900135801 is an equidigital number, since it uses as much as digits as its factorization.

280900135801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 37.

The spelling of 280900135801 in words is "two hundred eighty billion, nine hundred million, one hundred thirty-five thousand, eight hundred one".