280085295349 has 2 divisors, whose sum is σ = 280085295350. Its totient is φ = 280085295348.

The previous prime is 280085295313. The next prime is 280085295379. The reversal of 280085295349 is 943592580082.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 146554980625 + 133530314724 = 382825^2 + 365418^2 .

It is a cyclic number.

It is not a de Polignac number, because 280085295349 - 2²³ = 280076906741 is a prime.

It is a super-2 number, since 2×280085295349² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 280085295349.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (280085295379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140042647674 + 140042647675.

It is an arithmetic number, because the mean of its divisors is an integer number (140042647675).

Almost surely, 2^280085295349 is an apocalyptic number.

It is an amenable number.

280085295349 is a deficient number, since it is larger than the sum of its proper divisors (1).

280085295349 is an equidigital number, since it uses as much as digits as its factorization.

280085295349 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6220800, while the sum is 55.

The spelling of 280085295349 in words is "two hundred eighty billion, eighty-five million, two hundred ninety-five thousand, three hundred forty-nine".