281053856407 has 2 divisors, whose sum is σ = 281053856408. Its totient is φ = 281053856406.

The previous prime is 281053856393. The next prime is 281053856417. The reversal of 281053856407 is 704658350182.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-281053856407 is a prime.

It is a super-3 number, since 3×281053856407³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (281053856417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140526928203 + 140526928204.

It is an arithmetic number, because the mean of its divisors is an integer number (140526928204).

Almost surely, 2^281053856407 is an apocalyptic number.

281053856407 is a deficient number, since it is larger than the sum of its proper divisors (1).

281053856407 is an equidigital number, since it uses as much as digits as its factorization.

281053856407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1612800, while the sum is 49.

The spelling of 281053856407 in words is "two hundred eighty-one billion, fifty-three million, eight hundred fifty-six thousand, four hundred seven".