213040266408 has 48 divisors (see below), whose sum is σ = 577369260000. Its totient is φ = 70966012320.

The previous prime is 213040266353. The next prime is 213040266431. The reversal of 213040266408 is 804662040312.

213040266408 is a `hidden beast` number, since 2 + 1 + 3 + 0 + 4 + 0 + 2 + 6 + 640 + 8 = 666.

It is a super-2 number, since 2×213040266408² (a number of 23 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 879028 + ... + 1094883.

It is an arithmetic number, because the mean of its divisors is an integer number (12028526250).

Almost surely, 2^213040266408 is an apocalyptic number.

It is an amenable number.

213040266408 is an abundant number, since it is smaller than the sum of its proper divisors (364328993592).

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

213040266408 is a wasteful number, since it uses less digits than its factorization.

213040266408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1975422 (or 1975415 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

The spelling of 213040266408 in words is "two hundred thirteen billion, forty million, two hundred sixty-six thousand, four hundred eight".