281291855043 has 6 divisors (see below), whose sum is σ = 375057031564. Its totient is φ = 187527290944.

The previous prime is 281291855027. The next prime is 281291855057. The reversal of 281291855043 is 340558192182.

It is not a de Polignac number, because 281291855043 - 2⁴ = 281291855027 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 281291854983 and 281291855001.

It is not an unprimeable number, because it can be changed into a prime (281291855093) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 765523 + ... + 1071731.

Almost surely, 2^281291855043 is an apocalyptic number.

281291855043 is a deficient number, since it is larger than the sum of its proper divisors (93765176521).

281291855043 is an frugal number, since it uses more digits than its factorization.

281291855043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612421 (or 306212 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 48.

Multiplying 281291855043 by its sum of digits (48), we get a square (13502009042064 = 3674508²).

The spelling of 281291855043 in words is "two hundred eighty-one billion, two hundred ninety-one million, eight hundred fifty-five thousand, forty-three".