405374399999 has 4 divisors (see below), whose sum is σ = 422999373936. Its totient is φ = 387749426064.

The previous prime is 405374399977. The next prime is 405374400007. The reversal of 405374399999 is 999993473504.

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

It is a cyclic number.

It is not a de Polignac number, because 405374399999 - 2³² = 401079432703 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 (405374399909) 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, 8812486934 + ... + 8812486979.

It is an arithmetic number, because the mean of its divisors is an integer number (105749843484).

Almost surely, 2^405374399999 is an apocalyptic number.

405374399999 is a deficient number, since it is larger than the sum of its proper divisors (17624973937).

405374399999 is a wasteful number, since it uses less digits than its factorization.

405374399999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17624973936.

The product of its (nonzero) digits is 297606960, while the sum is 71.

The spelling of 405374399999 in words is "four hundred five billion, three hundred seventy-four million, three hundred ninety-nine thousand, nine hundred ninety-nine".