226720342505 has 16 divisors (see below), whose sum is σ = 281471846400. Its totient is φ = 175105801920.

The previous prime is 226720342477. The next prime is 226720342517. The reversal of 226720342505 is 505243027622.

It is a happy number.

It is not a de Polignac number, because 226720342505 - 2¹⁴ = 226720326121 is a prime.

It is a super-3 number, since 3×226720342505³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1650620 + ... + 1782690.

It is an arithmetic number, because the mean of its divisors is an integer number (17591990400).

Almost surely, 2^226720342505 is an apocalyptic number.

It is an amenable number.

226720342505 is a deficient number, since it is larger than the sum of its proper divisors (54751503895).

226720342505 is a wasteful number, since it uses less digits than its factorization.

226720342505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143944.

The product of its (nonzero) digits is 201600, while the sum is 38.

The spelling of 226720342505 in words is "two hundred twenty-six billion, seven hundred twenty million, three hundred forty-two thousand, five hundred five".