408197540281 has 16 divisors (see below), whose sum is σ = 415441509120. Its totient is φ = 401027103360.

The previous prime is 408197540263. The next prime is 408197540287. The reversal of 408197540281 is 182045791804.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-408197540281 is a prime.

It is a super-2 number, since 2×408197540281² (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 (408197540287) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8728960 + ... + 8775598.

It is an arithmetic number, because the mean of its divisors is an integer number (25965094320).

Almost surely, 2^408197540281 is an apocalyptic number.

It is an amenable number.

408197540281 is a deficient number, since it is larger than the sum of its proper divisors (7243968839).

408197540281 is a wasteful number, since it uses less digits than its factorization.

408197540281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47424.

The product of its (nonzero) digits is 645120, while the sum is 49.

The spelling of 408197540281 in words is "four hundred eight billion, one hundred ninety-seven million, five hundred forty thousand, two hundred eighty-one".