281495016187441 has 4 divisors (see below), whose sum is σ = 321708589928512. Its totient is φ = 241281442446372.

The previous prime is 281495016187369. The next prime is 281495016187499. The reversal of 281495016187441 is 144781610594182.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 281495016187441 - 2²⁹ = 281494479316529 is a prime.

It is a super-2 number, since 2×281495016187441² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 281495016187441.

It is not an unprimeable number, because it can be changed into a prime (281495016107441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20106786870525 + ... + 20106786870538.

It is an arithmetic number, because the mean of its divisors is an integer number (80427147482128).

Almost surely, 2^{281495016187441} is an apocalyptic number.

It is an amenable number.

281495016187441 is a deficient number, since it is larger than the sum of its proper divisors (40213573741071).

281495016187441 is an equidigital number, since it uses as much as digits as its factorization.

281495016187441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40213573741070.

The product of its (nonzero) digits is 15482880, while the sum is 61.

The spelling of 281495016187441 in words is "two hundred eighty-one trillion, four hundred ninety-five billion, sixteen million, one hundred eighty-seven thousand, four hundred forty-one".