216345682711478 has 32 divisors (see below), whose sum is σ = 326885493866400. Its totient is φ = 107385134598144.

The previous prime is 216345682711471. The next prime is 216345682711517. The reversal of 216345682711478 is 874117286543612.

216345682711478 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216345682711471) 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, 5284565933 + ... + 5284606871.

It is an arithmetic number, because the mean of its divisors is an integer number (10215171683325).

Almost surely, 2^{216345682711478} is an apocalyptic number.

216345682711478 is a deficient number, since it is larger than the sum of its proper divisors (110539811154922).

216345682711478 is a wasteful number, since it uses less digits than its factorization.

216345682711478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56144.

The product of its digits is 108380160, while the sum is 65.

The spelling of 216345682711478 in words is "two hundred sixteen trillion, three hundred forty-five billion, six hundred eighty-two million, seven hundred eleven thousand, four hundred seventy-eight".