1406521623223 has 16 divisors (see below), whose sum is σ = 1419894374976. Its totient is φ = 1393214042880.

The previous prime is 1406521623181. The next prime is 1406521623239. The reversal of 1406521623223 is 3223261256041.

It is a cyclic number.

It is not a de Polignac number, because 1406521623223 - 2⁹ = 1406521622711 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 (1406521623253) 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 15 ways as a sum of consecutive naturals, for example, 82277865 + ... + 82294957.

It is an arithmetic number, because the mean of its divisors is an integer number (88743398436).

Almost surely, 2^{1406521623223} is an apocalyptic number.

1406521623223 is a deficient number, since it is larger than the sum of its proper divisors (13372751753).

1406521623223 is a wasteful number, since it uses less digits than its factorization.

1406521623223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18954.

The product of its (nonzero) digits is 103680, while the sum is 37.

Adding to 1406521623223 its reverse (3223261256041), we get a palindrome (4629782879264).

The spelling of 1406521623223 in words is "one trillion, four hundred six billion, five hundred twenty-one million, six hundred twenty-three thousand, two hundred twenty-three".