216763405769 has 8 divisors (see below), whose sum is σ = 226209516480. Its totient is φ = 207319096336.

The previous prime is 216763405763. The next prime is 216763405783. The reversal of 216763405769 is 967504367612.

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

It is a cyclic number.

It is not a de Polignac number, because 216763405769 - 2⁴ = 216763405753 is a prime.

It is a super-2 number, since 2×216763405769² (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 (216763405763) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 201467 + ... + 688560.

It is an arithmetic number, because the mean of its divisors is an integer number (28276189560).

Almost surely, 2^216763405769 is an apocalyptic number.

It is an amenable number.

216763405769 is a deficient number, since it is larger than the sum of its proper divisors (9446110711).

216763405769 is a wasteful number, since it uses less digits than its factorization.

216763405769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 900639.

The product of its (nonzero) digits is 11430720, while the sum is 56.

The spelling of 216763405769 in words is "two hundred sixteen billion, seven hundred sixty-three million, four hundred five thousand, seven hundred sixty-nine".