213890293648 has 40 divisors (see below), whose sum is σ = 418821983360. Its totient is φ = 105810053760.

The previous prime is 213890293633. The next prime is 213890293657. The reversal of 213890293648 is 846392098312.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1116361 + ... + 1293847.

It is an arithmetic number, because the mean of its divisors is an integer number (10470549584).

Almost surely, 2^213890293648 is an apocalyptic number.

It is an amenable number.

213890293648 is a deficient number, since it is larger than the sum of its proper divisors (204931689712).

213890293648 is a wasteful number, since it uses less digits than its factorization.

213890293648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178295 (or 178289 counting only the distinct ones).

The product of its (nonzero) digits is 4478976, while the sum is 55.

The spelling of 213890293648 in words is "two hundred thirteen billion, eight hundred ninety million, two hundred ninety-three thousand, six hundred forty-eight".