78281080833 has 4 divisors (see below), whose sum is σ = 104374774448. Its totient is φ = 52187387220.

The previous prime is 78281080831. The next prime is 78281080841. The reversal of 78281080833 is 33808018287.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 78281080833 - 2¹ = 78281080831 is a prime.

It is a super-2 number, since 2×78281080833² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (78281080831) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 13046846803 + ... + 13046846808.

It is an arithmetic number, because the mean of its divisors is an integer number (26093693612).

Almost surely, 2^78281080833 is an apocalyptic number.

It is an amenable number.

78281080833 is a deficient number, since it is larger than the sum of its proper divisors (26093693615).

78281080833 is a wasteful number, since it uses less digits than its factorization.

78281080833 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26093693614.

The product of its (nonzero) digits is 516096, while the sum is 48.

The spelling of 78281080833 in words is "seventy-eight billion, two hundred eighty-one million, eighty thousand, eight hundred thirty-three".