213739619644 has 6 divisors (see below), whose sum is σ = 374044334384. Its totient is φ = 106869809820.

The previous prime is 213739619627. The next prime is 213739619693. The reversal of 213739619644 is 446916937312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26717452452 + ... + 26717452459.

Almost surely, 2^213739619644 is an apocalyptic number.

It is an amenable number.

213739619644 is a deficient number, since it is larger than the sum of its proper divisors (160304714740).

213739619644 is a wasteful number, since it uses less digits than its factorization.

213739619644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53434904915 (or 53434904913 counting only the distinct ones).

The product of its digits is 5878656, while the sum is 55.

The spelling of 213739619644 in words is "two hundred thirteen billion, seven hundred thirty-nine million, six hundred nineteen thousand, six hundred forty-four".