213278001336 has 96 divisors (see below), whose sum is σ = 580480992000. Its totient is φ = 70741884672.

The previous prime is 213278001329. The next prime is 213278001353. The reversal of 213278001336 is 633100872312.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 213278001336.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47466706 + ... + 47471198.

It is an arithmetic number, because the mean of its divisors is an integer number (6046677000).

Almost surely, 2^213278001336 is an apocalyptic number.

It is an amenable number.

213278001336 is an abundant number, since it is smaller than the sum of its proper divisors (367202990664).

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

213278001336 is a wasteful number, since it uses less digits than its factorization.

213278001336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7613 (or 7606 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

Adding to 213278001336 its reverse (633100872312), we get a palindrome (846378873648).

The spelling of 213278001336 in words is "two hundred thirteen billion, two hundred seventy-eight million, one thousand, three hundred thirty-six".