11854742281 has 2 divisors, whose sum is σ = 11854742282. Its totient is φ = 11854742280.

The previous prime is 11854742269. The next prime is 11854742303. The reversal of 11854742281 is 18224745811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11820038400 + 34703881 = 108720^2 + 5891^2 .

It is a cyclic number.

It is not a de Polignac number, because 11854742281 - 2²⁷ = 11720524553 is a prime.

It is a super-2 number, since 2×11854742281² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11854742201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5927371140 + 5927371141.

It is an arithmetic number, because the mean of its divisors is an integer number (5927371141).

Almost surely, 2^11854742281 is an apocalyptic number.

It is an amenable number.

11854742281 is a deficient number, since it is larger than the sum of its proper divisors (1).

11854742281 is an equidigital number, since it uses as much as digits as its factorization.

11854742281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 143360, while the sum is 43.

The spelling of 11854742281 in words is "eleven billion, eight hundred fifty-four million, seven hundred forty-two thousand, two hundred eighty-one".