216792789409 has 12 divisors (see below), whose sum is σ = 265460559600. Its totient is φ = 176042264328.

The previous prime is 216792789377. The next prime is 216792789413. The reversal of 216792789409 is 904987297612.

It is not a de Polignac number, because 216792789409 - 2⁵ = 216792789377 is a prime.

It is a super-2 number, since 2×216792789409² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (216792784409) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 116429139 + ... + 116431000.

It is an arithmetic number, because the mean of its divisors is an integer number (22121713300).

Almost surely, 2^216792789409 is an apocalyptic number.

It is an amenable number.

216792789409 is a deficient number, since it is larger than the sum of its proper divisors (48667770191).

216792789409 is a wasteful number, since it uses less digits than its factorization.

216792789409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232860172 (or 232860165 counting only the distinct ones).

The product of its (nonzero) digits is 27433728, while the sum is 64.

The spelling of 216792789409 in words is "two hundred sixteen billion, seven hundred ninety-two million, seven hundred eighty-nine thousand, four hundred nine".