213116945638 has 8 divisors (see below), whose sum is σ = 325707030288. Its totient is φ = 104547935544.

The previous prime is 213116945627. The next prime is 213116945693. The reversal of 213116945638 is 836549611312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 213116945591 and 213116945600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1005268506 + ... + 1005268717.

It is an arithmetic number, because the mean of its divisors is an integer number (40713378786).

Almost surely, 2^213116945638 is an apocalyptic number.

213116945638 is a deficient number, since it is larger than the sum of its proper divisors (112590084650).

213116945638 is a wasteful number, since it uses less digits than its factorization.

213116945638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2010537278.

The product of its digits is 933120, while the sum is 49.

The spelling of 213116945638 in words is "two hundred thirteen billion, one hundred sixteen million, nine hundred forty-five thousand, six hundred thirty-eight".