280239537379 has 4 divisors (see below), whose sum is σ = 282858598584. Its totient is φ = 277620476176.

The previous prime is 280239537377. The next prime is 280239537433. The reversal of 280239537379 is 973735932082.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 280239537379 - 2¹ = 280239537377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (280239537371) 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 in 3 ways as a sum of consecutive naturals, for example, 1309530442 + ... + 1309530655.

It is an arithmetic number, because the mean of its divisors is an integer number (70714649646).

Almost surely, 2^280239537379 is an apocalyptic number.

280239537379 is a deficient number, since it is larger than the sum of its proper divisors (2619061205).

280239537379 is a wasteful number, since it uses less digits than its factorization.

280239537379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2619061204.

The product of its (nonzero) digits is 17146080, while the sum is 58.

The spelling of 280239537379 in words is "two hundred eighty billion, two hundred thirty-nine million, five hundred thirty-seven thousand, three hundred seventy-nine".