213244515513544 has 16 divisors (see below), whose sum is σ = 408340561622400. Its totient is φ = 104353699080912.

The previous prime is 213244515513481. The next prime is 213244515513637. The reversal of 213244515513544 is 445315515442312.

It is a happy number.

It is a super-2 number, since 2×213244515513544² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 283569834084 + ... + 283569834835.

It is an arithmetic number, because the mean of its divisors is an integer number (25521285101400).

Almost surely, 2^{213244515513544} is an apocalyptic number.

It is an amenable number.

213244515513544 is a deficient number, since it is larger than the sum of its proper divisors (195096046108856).

213244515513544 is a wasteful number, since it uses less digits than its factorization.

213244515513544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567139668972 (or 567139668968 counting only the distinct ones).

The product of its digits is 5760000, while the sum is 49.

The spelling of 213244515513544 in words is "two hundred thirteen trillion, two hundred forty-four billion, five hundred fifteen million, five hundred thirteen thousand, five hundred forty-four".