1423840399873 has 16 divisors (see below), whose sum is σ = 1451707197696. Its totient is φ = 1396250634240.

The previous prime is 1423840399859. The next prime is 1423840399913. The reversal of 1423840399873 is 3789930483241.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1423840399873 is a prime.

It is a super-2 number, since 2×1423840399873² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1423840399823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37939188 + ... + 37976698.

It is an arithmetic number, because the mean of its divisors is an integer number (90731699856).

Almost surely, 2^{1423840399873} is an apocalyptic number.

It is an amenable number.

1423840399873 is a deficient number, since it is larger than the sum of its proper divisors (27866797823).

1423840399873 is a wasteful number, since it uses less digits than its factorization.

1423840399873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41184.

The product of its (nonzero) digits is 31352832, while the sum is 61.

The spelling of 1423840399873 in words is "one trillion, four hundred twenty-three billion, eight hundred forty million, three hundred ninety-nine thousand, eight hundred seventy-three".