210023537136 has 160 divisors (see below), whose sum is σ = 642333888000. Its totient is φ = 57885020160.

The previous prime is 210023537093. The next prime is 210023537137. The reversal of 210023537136 is 631735320012.

It is a super-2 number, since 2×210023537136² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 210023537097 and 210023537106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210023537137) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1140415 + ... + 1311713.

It is an arithmetic number, because the mean of its divisors is an integer number (4014586800).

Almost surely, 2^210023537136 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 210023537136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (321166944000).

210023537136 is an abundant number, since it is smaller than the sum of its proper divisors (432310350864).

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

210023537136 is a wasteful number, since it uses less digits than its factorization.

210023537136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171447 (or 171441 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 33.

Adding to 210023537136 its reverse (631735320012), we get a palindrome (841758857148).

The spelling of 210023537136 in words is "two hundred ten billion, twenty-three million, five hundred thirty-seven thousand, one hundred thirty-six".