21375133530254 has 8 divisors (see below), whose sum is σ = 36643086051888. Its totient is φ = 9160771512960.

The previous prime is 21375133530241. The next prime is 21375133530263. The reversal of 21375133530254 is 45203533157312.

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

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 763397626067 + ... + 763397626094.

It is an arithmetic number, because the mean of its divisors is an integer number (4580385756486).

Almost surely, 2^{21375133530254} is an apocalyptic number.

21375133530254 is a deficient number, since it is larger than the sum of its proper divisors (15267952521634).

21375133530254 is a wasteful number, since it uses less digits than its factorization.

21375133530254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1526795252170.

The product of its (nonzero) digits is 1134000, while the sum is 44.

Adding to 21375133530254 its reverse (45203533157312), we get a palindrome (66578666687566).

The spelling of 21375133530254 in words is "twenty-one trillion, three hundred seventy-five billion, one hundred thirty-three million, five hundred thirty thousand, two hundred fifty-four".