213601672144 has 20 divisors (see below), whose sum is σ = 472975131424. Its totient is φ = 91543573728.

The previous prime is 213601672091. The next prime is 213601672171. The reversal of 213601672144 is 441276106312.

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, 953578782 + ... + 953579005.

Almost surely, 2^213601672144 is an apocalyptic number.

It is an amenable number.

213601672144 is an abundant number, since it is smaller than the sum of its proper divisors (259373459280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213601672144 is a wasteful number, since it uses less digits than its factorization.

213601672144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1907157802 (or 1907157796 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 37.

Adding to 213601672144 its reverse (441276106312), we get a palindrome (654877778456).

The spelling of 213601672144 in words is "two hundred thirteen billion, six hundred one million, six hundred seventy-two thousand, one hundred forty-four".