21253045160234 has 8 divisors (see below), whose sum is σ = 31880993102208. Its totient is φ = 10626047459500.

The previous prime is 21253045160189. The next prime is 21253045160239. The reversal of 21253045160234 is 43206154035212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (21253045160239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 237504392 + ... + 237593859.

It is an arithmetic number, because the mean of its divisors is an integer number (3985124137776).

Almost surely, 2^{21253045160234} is an apocalyptic number.

21253045160234 is a deficient number, since it is larger than the sum of its proper divisors (10627947941974).

21253045160234 is a wasteful number, since it uses less digits than its factorization.

21253045160234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475120620.

The product of its (nonzero) digits is 172800, while the sum is 38.

Adding to 21253045160234 its reverse (43206154035212), we get a palindrome (64459199195446).

The spelling of 21253045160234 in words is "twenty-one trillion, two hundred fifty-three billion, forty-five million, one hundred sixty thousand, two hundred thirty-four".