216123726995 has 16 divisors (see below), whose sum is σ = 283088239200. Its totient is φ = 157090540800.

The previous prime is 216123726983. The next prime is 216123726997. The reversal of 216123726995 is 599627321612.

It is a happy number.

It is not a de Polignac number, because 216123726995 - 2⁴ = 216123726979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (216123726997) 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, 1032770 + ... + 1224279.

It is an arithmetic number, because the mean of its divisors is an integer number (17693014950).

Almost surely, 2^216123726995 is an apocalyptic number.

216123726995 is a deficient number, since it is larger than the sum of its proper divisors (66964512205).

216123726995 is a wasteful number, since it uses less digits than its factorization.

216123726995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2258806.

The product of its digits is 2449440, while the sum is 53.

The spelling of 216123726995 in words is "two hundred sixteen billion, one hundred twenty-three million, seven hundred twenty-six thousand, nine hundred ninety-five".