280506680465 has 8 divisors (see below), whose sum is σ = 367208745408. Its totient is φ = 204004858480.

The previous prime is 280506680459. The next prime is 280506680471. The reversal of 280506680465 is 564086605082.

It is an interprime number because it is at equal distance from previous prime (280506680459) and next prime (280506680471).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 280506680465 - 2⁴ = 280506680449 is a prime.

It is a super-2 number, since 2×280506680465² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2550060677 + ... + 2550060786.

It is an arithmetic number, because the mean of its divisors is an integer number (45901093176).

Almost surely, 2^280506680465 is an apocalyptic number.

It is an amenable number.

280506680465 is a deficient number, since it is larger than the sum of its proper divisors (86702064943).

280506680465 is a wasteful number, since it uses less digits than its factorization.

280506680465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5100121479.

The product of its (nonzero) digits is 2764800, while the sum is 50.

The spelling of 280506680465 in words is "two hundred eighty billion, five hundred six million, six hundred eighty thousand, four hundred sixty-five".