216034733778386 has 8 divisors (see below), whose sum is σ = 324166083124464. Its totient is φ = 107979372736900.

The previous prime is 216034733778377. The next prime is 216034733778401. The reversal of 216034733778386 is 683877337430612.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×216034733778386² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18997069040 + ... + 18997080411.

It is an arithmetic number, because the mean of its divisors is an integer number (40520760390558).

Almost surely, 2^{216034733778386} is an apocalyptic number.

216034733778386 is a deficient number, since it is larger than the sum of its proper divisors (108131349346078).

216034733778386 is a wasteful number, since it uses less digits than its factorization.

216034733778386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37994152296.

The product of its (nonzero) digits is 512096256, while the sum is 68.

The spelling of 216034733778386 in words is "two hundred sixteen trillion, thirty-four billion, seven hundred thirty-three million, seven hundred seventy-eight thousand, three hundred eighty-six".