509222266881 has 16 divisors (see below), whose sum is σ = 723312477504. Its totient is φ = 317551809024.

The previous prime is 509222266873. The next prime is 509222266907. The reversal of 509222266881 is 188662222905.

It is not a de Polignac number, because 509222266881 - 2³ = 509222266873 is a prime.

It is a super-2 number, since 2×509222266881² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (509222266801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30619756 + ... + 30636381.

It is an arithmetic number, because the mean of its divisors is an integer number (45207029844).

Almost surely, 2^509222266881 is an apocalyptic number.

509222266881 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

509222266881 is a deficient number, since it is larger than the sum of its proper divisors (214090210623).

509222266881 is a wasteful number, since it uses less digits than its factorization.

509222266881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61256320.

The product of its (nonzero) digits is 1658880, while the sum is 51.

The spelling of 509222266881 in words is "five hundred nine billion, two hundred twenty-two million, two hundred sixty-six thousand, eight hundred eighty-one".