213112254654 has 24 divisors (see below), whose sum is σ = 497261928072. Its totient is φ = 65573001360.

The previous prime is 213112254653. The next prime is 213112254713. The reversal of 213112254654 is 456452211312.

213112254654 is a `hidden beast` number, since 21 + 31 + 12 + 2 + 546 + 54 = 666.

It is a super-2 number, since 2×213112254654² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213112254653) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 455367832 + ... + 455368299.

It is an arithmetic number, because the mean of its divisors is an integer number (20719247003).

Almost surely, 2^213112254654 is an apocalyptic number.

213112254654 is an abundant number, since it is smaller than the sum of its proper divisors (284149673418).

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

213112254654 is a wasteful number, since it uses less digits than its factorization.

213112254654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 910736152 (or 910736149 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

Adding to 213112254654 its reverse (456452211312), we get a palindrome (669564465966).

The spelling of 213112254654 in words is "two hundred thirteen billion, one hundred twelve million, two hundred fifty-four thousand, six hundred fifty-four".