213158866642 has 16 divisors (see below), whose sum is σ = 336587106240. Its totient is φ = 100963847088.

The previous prime is 213158866619. The next prime is 213158866643. The reversal of 213158866642 is 246668851312.

It is a self number, because there is not a number n which added to its sum of digits gives 213158866642.

It is not an unprimeable number, because it can be changed into a prime (213158866643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 496083 + ... + 820009.

It is an arithmetic number, because the mean of its divisors is an integer number (21036694140).

Almost surely, 2^213158866642 is an apocalyptic number.

213158866642 is a deficient number, since it is larger than the sum of its proper divisors (123428239598).

213158866642 is a wasteful number, since it uses less digits than its factorization.

213158866642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341265.

The product of its digits is 3317760, while the sum is 52.

The spelling of 213158866642 in words is "two hundred thirteen billion, one hundred fifty-eight million, eight hundred sixty-six thousand, six hundred forty-two".