1406323644505 has 64 divisors (see below), whose sum is σ = 2032580487168. Its totient is φ = 923898286080.

The previous prime is 1406323644487. The next prime is 1406323644571. The reversal of 1406323644505 is 5054463236041.

It is a happy number.

It is not a de Polignac number, because 1406323644505 - 2⁹ = 1406323643993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 995587 + ... + 1950343.

It is an arithmetic number, because the mean of its divisors is an integer number (31759070112).

Almost surely, 2^{1406323644505} is an apocalyptic number.

It is an amenable number.

1406323644505 is a deficient number, since it is larger than the sum of its proper divisors (626256842663).

1406323644505 is a wasteful number, since it uses less digits than its factorization.

1406323644505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 954866.

The product of its (nonzero) digits is 1036800, while the sum is 43.

The spelling of 1406323644505 in words is "one trillion, four hundred six billion, three hundred twenty-three million, six hundred forty-four thousand, five hundred five".