21375061504574 has 8 divisors (see below), whose sum is σ = 32093157171600. Its totient is φ = 10677342447376.

The previous prime is 21375061504481. The next prime is 21375061504579. The reversal of 21375061504574 is 47540516057312.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21375061504579) 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 3 ways as a sum of consecutive naturals, for example, 5094149834 + ... + 5094154029.

It is an arithmetic number, because the mean of its divisors is an integer number (4011644646450).

Almost surely, 2^{21375061504574} is an apocalyptic number.

21375061504574 is a deficient number, since it is larger than the sum of its proper divisors (10718095667026).

21375061504574 is a wasteful number, since it uses less digits than its factorization.

21375061504574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10188304914.

The product of its (nonzero) digits is 3528000, while the sum is 50.

The spelling of 21375061504574 in words is "twenty-one trillion, three hundred seventy-five billion, sixty-one million, five hundred four thousand, five hundred seventy-four".