213554846466 has 40 divisors (see below), whose sum is σ = 515330361084. Its totient is φ = 65709182880.

The previous prime is 213554846399. The next prime is 213554846489. The reversal of 213554846466 is 664648455312.

213554846466 is a `hidden beast` number, since 2 + 1 + 3 + 554 + 8 + 46 + 46 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 198751014225 + 14803832241 = 445815^2 + 121671^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 50699425 + ... + 50703636.

Almost surely, 2^213554846466 is an apocalyptic number.

213554846466 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

213554846466 is an abundant number, since it is smaller than the sum of its proper divisors (301775514618).

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

213554846466 is a wasteful number, since it uses less digits than its factorization.

213554846466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101403088 (or 101403079 counting only the distinct ones).

The product of its digits is 16588800, while the sum is 54.

It can be divided in two parts, 213554846 and 466, that added together give a palindrome (213555312).

The spelling of 213554846466 in words is "two hundred thirteen billion, five hundred fifty-four million, eight hundred forty-six thousand, four hundred sixty-six".