213128777588 has 24 divisors (see below), whose sum is σ = 383113497984. Its totient is φ = 103681944000.

The previous prime is 213128777579. The next prime is 213128777627. The reversal of 213128777588 is 885777821312.

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 7 ways as a sum of consecutive naturals, for example, 1710338 + ... + 1830713.

It is an arithmetic number, because the mean of its divisors is an integer number (15963062416).

Almost surely, 2^213128777588 is an apocalyptic number.

It is an amenable number.

213128777588 is a deficient number, since it is larger than the sum of its proper divisors (169984720396).

213128777588 is a wasteful number, since it uses less digits than its factorization.

213128777588 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3541463 (or 3541461 counting only the distinct ones).

The product of its digits is 10536960, while the sum is 59.

The spelling of 213128777588 in words is "two hundred thirteen billion, one hundred twenty-eight million, seven hundred seventy-seven thousand, five hundred eighty-eight".