14161221521631 has 24 divisors (see below), whose sum is σ = 20549377124640. Its totient is φ = 9397377614016.

The previous prime is 14161221521593. The next prime is 14161221521653. The reversal of 14161221521631 is 13612512216141.

14161221521631 is a `hidden beast` number, since 1 + 4 + 1 + 6 + 1 + 2 + 2 + 15 + 2 + 1 + 631 = 666.

It is not a de Polignac number, because 14161221521631 - 2⁶ = 14161221521567 is a prime.

It is a super-2 number, since 2×14161221521631² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14161221521831) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 987916 + ... + 5412801.

It is an arithmetic number, because the mean of its divisors is an integer number (856224046860).

Almost surely, 2^{14161221521631} is an apocalyptic number.

14161221521631 is a deficient number, since it is larger than the sum of its proper divisors (6388155603009).

14161221521631 is a wasteful number, since it uses less digits than its factorization.

14161221521631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6401855 (or 6401852 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

Adding to 14161221521631 its reverse (13612512216141), we get a palindrome (27773733737772).

The spelling of 14161221521631 in words is "fourteen trillion, one hundred sixty-one billion, two hundred twenty-one million, five hundred twenty-one thousand, six hundred thirty-one".