226417377207781 has 4 divisors (see below), whose sum is σ = 226418848091500. Its totient is φ = 226415906324064.

The previous prime is 226417377207779. The next prime is 226417377207799. The reversal of 226417377207781 is 187702773714622.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 115937118108100 + 110480259099681 = 10767410^2 + 10510959^2 .

It is a cyclic number.

It is not a de Polignac number, because 226417377207781 - 2¹ = 226417377207779 is a prime.

It is a super-2 number, since 2×226417377207781² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (226417377207701) 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, 735210936 + ... + 735518833.

It is an arithmetic number, because the mean of its divisors is an integer number (56604712022875).

Almost surely, 2^{226417377207781} is an apocalyptic number.

It is an amenable number.

226417377207781 is a deficient number, since it is larger than the sum of its proper divisors (1470883719).

226417377207781 is a wasteful number, since it uses less digits than its factorization.

226417377207781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1470883718.

The product of its (nonzero) digits is 77446656, while the sum is 64.

The spelling of 226417377207781 in words is "two hundred twenty-six trillion, four hundred seventeen billion, three hundred seventy-seven million, two hundred seven thousand, seven hundred eighty-one".