1405466500021 has 4 divisors (see below), whose sum is σ = 1405469734092. Its totient is φ = 1405463265952.

The previous prime is 1405466499953. The next prime is 1405466500093. The reversal of 1405466500021 is 1200056645041.

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 669369422500 + 736097077521 = 818150^2 + 857961^2 .

It is a cyclic number.

It is not a de Polignac number, because 1405466500021 - 2⁹ = 1405466499509 is a prime.

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 1405466500021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1405466500621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 841030 + ... + 1875703.

It is an arithmetic number, because the mean of its divisors is an integer number (351367433523).

Almost surely, 2^{1405466500021} is an apocalyptic number.

It is an amenable number.

1405466500021 is a deficient number, since it is larger than the sum of its proper divisors (3234071).

1405466500021 is an equidigital number, since it uses as much as digits as its factorization.

1405466500021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3234070.

The product of its (nonzero) digits is 28800, while the sum is 34.

The spelling of 1405466500021 in words is "one trillion, four hundred five billion, four hundred sixty-six million, five hundred thousand, twenty-one".