405245034013 has 4 divisors (see below), whose sum is σ = 408203027100. Its totient is φ = 402287040928.

The previous prime is 405245034011. The next prime is 405245034091. The reversal of 405245034013 is 310430542504.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 227737019524 + 177508014489 = 477218^2 + 421317^2 .

It is a cyclic number.

It is not a de Polignac number, because 405245034013 - 2¹ = 405245034011 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405245034011) 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, 1478996338 + ... + 1478996611.

It is an arithmetic number, because the mean of its divisors is an integer number (102050756775).

Almost surely, 2^405245034013 is an apocalyptic number.

It is an amenable number.

405245034013 is a deficient number, since it is larger than the sum of its proper divisors (2957993087).

405245034013 is a wasteful number, since it uses less digits than its factorization.

405245034013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2957993086.

The product of its (nonzero) digits is 28800, while the sum is 31.

Adding to 405245034013 its reverse (310430542504), we get a palindrome (715675576517).

The spelling of 405245034013 in words is "four hundred five billion, two hundred forty-five million, thirty-four thousand, thirteen".