227421712665 has 80 divisors (see below), whose sum is σ = 466684787712. Its totient is φ = 103792150656.

The previous prime is 227421712657. The next prime is 227421712709. The reversal of 227421712665 is 566217124722.

It is not a de Polignac number, because 227421712665 - 2³ = 227421712657 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 227421712665.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1654767 + ... + 1786923.

Almost surely, 2^227421712665 is an apocalyptic number.

It is an amenable number.

227421712665 is an abundant number, since it is smaller than the sum of its proper divisors (239263075047).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

227421712665 is a wasteful number, since it uses less digits than its factorization.

227421712665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132788 (or 132779 counting only the distinct ones).

The product of its digits is 564480, while the sum is 45.

The spelling of 227421712665 in words is "two hundred twenty-seven billion, four hundred twenty-one million, seven hundred twelve thousand, six hundred sixty-five".