216798723027 has 12 divisors (see below), whose sum is σ = 313163539624. Its totient is φ = 144527945760.

The previous prime is 216798722941. The next prime is 216798723049. The reversal of 216798723027 is 720327897612.

It is not a de Polignac number, because 216798723027 - 2²⁰ = 216797674451 is a prime.

It is a super-2 number, since 2×216798723027² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216798723077) 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, 61378 + ... + 661335.

Almost surely, 2^216798723027 is an apocalyptic number.

216798723027 is a deficient number, since it is larger than the sum of its proper divisors (96364816597).

216798723027 is a wasteful number, since it uses less digits than its factorization.

216798723027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 756050 (or 756047 counting only the distinct ones).

The product of its (nonzero) digits is 3556224, while the sum is 54.

The spelling of 216798723027 in words is "two hundred sixteen billion, seven hundred ninety-eight million, seven hundred twenty-three thousand, twenty-seven".