213075348066 has 32 divisors (see below), whose sum is σ = 541143742080. Its totient is φ = 60878670768.

The previous prime is 213075348053. The next prime is 213075348091. The reversal of 213075348066 is 660843570312.

213075348066 is a `hidden beast` number, since 2 + 1 + 30 + 7 + 534 + 80 + 6 + 6 = 666.

It is a super-2 number, since 2×213075348066² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 281845321 + ... + 281846076.

It is an arithmetic number, because the mean of its divisors is an integer number (16910741940).

Almost surely, 2^213075348066 is an apocalyptic number.

213075348066 is an abundant number, since it is smaller than the sum of its proper divisors (328068394014).

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

213075348066 is a wasteful number, since it uses less digits than its factorization.

213075348066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563691415 (or 563691409 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The spelling of 213075348066 in words is "two hundred thirteen billion, seventy-five million, three hundred forty-eight thousand, sixty-six".