213211143649 has 8 divisors (see below), whose sum is σ = 244050023808. Its totient is φ = 182467299840.

The previous prime is 213211143647. The next prime is 213211143671. The reversal of 213211143649 is 946341112312.

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

It is not a de Polignac number, because 213211143649 - 2¹ = 213211143647 is a prime.

It is a super-2 number, since 2×213211143649² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213211143647) 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, 23754277 + ... + 23763250.

It is an arithmetic number, because the mean of its divisors is an integer number (30506252976).

Almost surely, 2^213211143649 is an apocalyptic number.

It is an amenable number.

213211143649 is a deficient number, since it is larger than the sum of its proper divisors (30838880159).

213211143649 is an equidigital number, since it uses as much as digits as its factorization.

213211143649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47518175.

The product of its digits is 31104, while the sum is 37.

The spelling of 213211143649 in words is "two hundred thirteen billion, two hundred eleven million, one hundred forty-three thousand, six hundred forty-nine".