213744990478 has 32 divisors (see below), whose sum is σ = 340735659264. Its totient is φ = 100213345152.

The previous prime is 213744990397. The next prime is 213744990493. The reversal of 213744990478 is 874099447312.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40152325 + ... + 40157647.

It is an arithmetic number, because the mean of its divisors is an integer number (10647989352).

Almost surely, 2^213744990478 is an apocalyptic number.

213744990478 is a deficient number, since it is larger than the sum of its proper divisors (126990668786).

213744990478 is a wasteful number, since it uses less digits than its factorization.

213744990478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9496.

The product of its (nonzero) digits is 12192768, while the sum is 58.

The spelling of 213744990478 in words is "two hundred thirteen billion, seven hundred forty-four million, nine hundred ninety thousand, four hundred seventy-eight".