213113244125454 has 32 divisors (see below), whose sum is σ = 430935142165920. Its totient is φ = 70254569088000.

The previous prime is 213113244125437. The next prime is 213113244125491. The reversal of 213113244125454 is 454521442311312.

It is a super-2 number, since 2×213113244125454² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

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, 199052959 + ... + 200120730.

It is an arithmetic number, because the mean of its divisors is an integer number (13466723192685).

Almost surely, 2^{213113244125454} is an apocalyptic number.

213113244125454 is an abundant number, since it is smaller than the sum of its proper divisors (217821898040466).

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

213113244125454 is a wasteful number, since it uses less digits than its factorization.

213113244125454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399174676.

The product of its digits is 460800, while the sum is 42.

Adding to 213113244125454 its reverse (454521442311312), we get a palindrome (667634686436766).

The spelling of 213113244125454 in words is "two hundred thirteen trillion, one hundred thirteen billion, two hundred forty-four million, one hundred twenty-five thousand, four hundred fifty-four".