281396664139 has 8 divisors (see below), whose sum is σ = 289228341168. Its totient is φ = 273576900960.

The previous prime is 281396664083. The next prime is 281396664161. The reversal of 281396664139 is 931466693182.

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 281396664139 - 2¹⁵ = 281396631371 is a prime.

It is a super-2 number, since 2×281396664139² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (281396664169) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2930557 + ... + 3025054.

It is an arithmetic number, because the mean of its divisors is an integer number (36153542646).

Almost surely, 2^281396664139 is an apocalyptic number.

281396664139 is a deficient number, since it is larger than the sum of its proper divisors (7831677029).

281396664139 is a wasteful number, since it uses less digits than its factorization.

281396664139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5956925.

The product of its digits is 10077696, while the sum is 58.

The spelling of 281396664139 in words is "two hundred eighty-one billion, three hundred ninety-six million, six hundred sixty-four thousand, one hundred thirty-nine".