213536157743028 has 96 divisors (see below), whose sum is σ = 524806607001600. Its totient is φ = 67446202451584.

The previous prime is 213536157743017. The next prime is 213536157743101. The reversal of 213536157743028 is 820347751635312.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4776058 + ... + 21210446.

It is an arithmetic number, because the mean of its divisors is an integer number (5466735489600).

Almost surely, 2^{213536157743028} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213536157743028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (262403303500800).

213536157743028 is an abundant number, since it is smaller than the sum of its proper divisors (311270449258572).

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

213536157743028 is a wasteful number, since it uses less digits than its factorization.

213536157743028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16434861 (or 16434859 counting only the distinct ones).

The product of its (nonzero) digits is 25401600, while the sum is 57.

The spelling of 213536157743028 in words is "two hundred thirteen trillion, five hundred thirty-six billion, one hundred fifty-seven million, seven hundred forty-three thousand, twenty-eight".