226386591601 has 27 divisors (see below), whose sum is σ = 239986721163.
Its totient is φ = 213539488800.
The previous prime is 226386591589. The next prime is 226386591631. The reversal of 226386591601 is 106195683622.
Multipling 226386591601 by its sum of digits (49), we get a square (11092942988449 = 33306072).
The square root of 226386591601 is 475801.
It is a perfect power (a square), and thus also a powerful number.
It can be written as a sum of positive squares in only one way, i.e., 132980562225 + 93406029376 = 364665^2 + 305624^2
It is not a de Polignac number, because 226386591601 - 221 = 226384494449 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (226386591631) by changing a digit.
It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1499248876 + ... + 1499249026.
Almost surely, 2226386591601 is an apocalyptic number.
226386591601 is the 475801-st square number.
226386591601 is the 237901-st centered octagonal number.
It is an amenable number.
226386591601 is a deficient number, since it is larger than the sum of its proper divisors (13600129562).
226386591601 is an frugal number, since it uses more digits than its factorization.
226386591601 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 622 (or 311 counting only the distinct ones).
The product of its (nonzero) digits is 933120, while the sum is 49.
The spelling of 226386591601 in words is "two hundred twenty-six billion, three hundred eighty-six million, five hundred ninety-one thousand, six hundred one".