216374641782 has 32 divisors (see below), whose sum is σ = 466720144128. Its totient is φ = 66479319456.

The previous prime is 216374641781. The next prime is 216374641789. The reversal of 216374641782 is 287146473612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216374641781) 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, 1977498 + ... + 2084045.

It is an arithmetic number, because the mean of its divisors is an integer number (14585004504).

Almost surely, 2^216374641782 is an apocalyptic number.

216374641782 is an abundant number, since it is smaller than the sum of its proper divisors (250345502346).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

216374641782 is a wasteful number, since it uses less digits than its factorization.

216374641782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4062244.

The product of its digits is 2709504, while the sum is 51.

The spelling of 216374641782 in words is "two hundred sixteen billion, three hundred seventy-four million, six hundred forty-one thousand, seven hundred eighty-two".