79281059281 has 8 divisors (see below), whose sum is σ = 79904737224. Its totient is φ = 78659804160.

The previous prime is 79281059269. The next prime is 79281059309. The reversal of 79281059281 is 18295018297.

It can be written as a sum of positive squares in 4 ways, for example, as 19483693056 + 59797366225 = 139584^2 + 244535^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 79281059281 - 2¹³ = 79281051089 is a prime.

It is a super-2 number, since 2×79281059281² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79281059581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 539976 + ... + 670921.

It is an arithmetic number, because the mean of its divisors is an integer number (9988092153).

Almost surely, 2^79281059281 is an apocalyptic number.

It is an amenable number.

79281059281 is a deficient number, since it is larger than the sum of its proper divisors (623677943).

79281059281 is a wasteful number, since it uses less digits than its factorization.

79281059281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1211411.

The product of its (nonzero) digits is 725760, while the sum is 52.

The spelling of 79281059281 in words is "seventy-nine billion, two hundred eighty-one million, fifty-nine thousand, two hundred eighty-one".