221411640406451 has 8 divisors (see below), whose sum is σ = 241542825798000. Its totient is φ = 201280930755840.

The previous prime is 221411640406421. The next prime is 221411640406501. The reversal of 221411640406451 is 154604046114122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221411640406451 is a prime.

It is a super-2 number, since 2×221411640406451² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221411640406399 and 221411640406408.

It is not an unprimeable number, because it can be changed into a prime (221411640406421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117961766 + ... + 119824043.

It is an arithmetic number, because the mean of its divisors is an integer number (30192853224750).

Almost surely, 2^{221411640406451} is an apocalyptic number.

221411640406451 is a deficient number, since it is larger than the sum of its proper divisors (20131185391549).

221411640406451 is a wasteful number, since it uses less digits than its factorization.

221411640406451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237870469.

The product of its (nonzero) digits is 184320, while the sum is 41.

The spelling of 221411640406451 in words is "two hundred twenty-one trillion, four hundred eleven billion, six hundred forty million, four hundred six thousand, four hundred fifty-one".