1423650655221 has 16 divisors (see below), whose sum is σ = 1905747502080. Its totient is φ = 945329117040.

The previous prime is 1423650655159. The next prime is 1423650655261. The reversal of 1423650655221 is 1225560563241.

It is a de Polignac number, because none of the positive numbers 2^k-1423650655221 is a prime.

It is a super-2 number, since 2×1423650655221² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1423650655261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2629806 + ... + 3124608.

It is an arithmetic number, because the mean of its divisors is an integer number (119109218880).

Almost surely, 2^{1423650655221} is an apocalyptic number.

It is an amenable number.

1423650655221 is a deficient number, since it is larger than the sum of its proper divisors (482096846859).

1423650655221 is a wasteful number, since it uses less digits than its factorization.

1423650655221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498616.

The product of its (nonzero) digits is 432000, while the sum is 42.

The spelling of 1423650655221 in words is "one trillion, four hundred twenty-three billion, six hundred fifty million, six hundred fifty-five thousand, two hundred twenty-one".