226516247621 has 4 divisors (see below), whose sum is σ = 226571784000. Its totient is φ = 226460711244.

The previous prime is 226516247609. The next prime is 226516247641. The reversal of 226516247621 is 126742615622.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-226516247621 is a prime.

It is a super-2 number, since 2×226516247621² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (226516247641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27762071 + ... + 27770228.

It is an arithmetic number, because the mean of its divisors is an integer number (56642946000).

Almost surely, 2^226516247621 is an apocalyptic number.

It is an amenable number.

226516247621 is a deficient number, since it is larger than the sum of its proper divisors (55536379).

226516247621 is an equidigital number, since it uses as much as digits as its factorization.

226516247621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55536378.

The product of its digits is 483840, while the sum is 44.

The spelling of 226516247621 in words is "two hundred twenty-six billion, five hundred sixteen million, two hundred forty-seven thousand, six hundred twenty-one".