213353581455 has 24 divisors (see below), whose sum is σ = 422643285792. Its totient is φ = 97533065664.

The previous prime is 213353581447. The next prime is 213353581457. The reversal of 213353581455 is 554185353312.

213353581455 is a `hidden beast` number, since 2 + 1 + 33 + 535 + 81 + 4 + 5 + 5 = 666.

It is not a de Polignac number, because 213353581455 - 2³ = 213353581447 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 213353581455.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213353581457) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 338656164 + ... + 338656793.

It is an arithmetic number, because the mean of its divisors is an integer number (17610136908).

Almost surely, 2^213353581455 is an apocalyptic number.

213353581455 is a deficient number, since it is larger than the sum of its proper divisors (209289704337).

213353581455 is a wasteful number, since it uses less digits than its factorization.

213353581455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 677312975 (or 677312972 counting only the distinct ones).

The product of its digits is 1080000, while the sum is 45.

The spelling of 213353581455 in words is "two hundred thirteen billion, three hundred fifty-three million, five hundred eighty-one thousand, four hundred fifty-five".