213020193664 has 32 divisors (see below), whose sum is σ = 424665037440. Its totient is φ = 106437596160.

The previous prime is 213020193643. The next prime is 213020193671. The reversal of 213020193664 is 466391020312.

It is a tau number, because it is divible by the number of its divisors (32).

It is a zygodrome in base 2.

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, 377389 + ... + 753964.

It is an arithmetic number, because the mean of its divisors is an integer number (13270782420).

Almost surely, 2^213020193664 is an apocalyptic number.

It is an amenable number.

213020193664 is a deficient number, since it is larger than the sum of its proper divisors (211644843776).

213020193664 is a wasteful number, since it uses less digits than its factorization.

213020193664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1132838 (or 1132826 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 37.

The spelling of 213020193664 in words is "two hundred thirteen billion, twenty million, one hundred ninety-three thousand, six hundred sixty-four".