212115001536 has 168 divisors, whose sum is σ = 630704748240. Its totient is φ = 69906051072.

The previous prime is 212115001529. The next prime is 212115001537. The reversal of 212115001536 is 635100511212.

212115001536 is a `hidden beast` number, since 2 + 1 + 2 + 1 + 1 + 500 + 153 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (212115001537) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13679740 + ... + 13695236.

It is an arithmetic number, because the mean of its divisors is an integer number (3754194930).

Almost surely, 2^212115001536 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 212115001536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (315352374120).

212115001536 is an abundant number, since it is smaller than the sum of its proper divisors (418589746704).

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

212115001536 is an equidigital number, since it uses as much as digits as its factorization.

212115001536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15696 (or 15591 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

Adding to 212115001536 its reverse (635100511212), we get a palindrome (847215512748).

The spelling of 212115001536 in words is "two hundred twelve billion, one hundred fifteen million, one thousand, five hundred thirty-six".