280108505853 has 12 divisors (see below), whose sum is σ = 441383100288. Its totient is φ = 169762730760.

The previous prime is 280108505779. The next prime is 280108505869. The reversal of 280108505853 is 358505801082.

280108505853 is a `hidden beast` number, since 2 + 8 + 0 + 10 + 8 + 50 + 585 + 3 = 666.

It is not a de Polignac number, because 280108505853 - 2²² = 280104311549 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 280108505799 and 280108505808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280108505153) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1414689325 + ... + 1414689522.

It is an arithmetic number, because the mean of its divisors is an integer number (36781925024).

Almost surely, 2^280108505853 is an apocalyptic number.

It is an amenable number.

280108505853 is a deficient number, since it is larger than the sum of its proper divisors (161274594435).

280108505853 is a wasteful number, since it uses less digits than its factorization.

280108505853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2829378864 (or 2829378861 counting only the distinct ones).

The product of its (nonzero) digits is 384000, while the sum is 45.

The spelling of 280108505853 in words is "two hundred eighty billion, one hundred eight million, five hundred five thousand, eight hundred fifty-three".