21487541333474 has 16 divisors (see below), whose sum is σ = 32245202196000. Its totient is φ = 10739140999104.

The previous prime is 21487541333411. The next prime is 21487541333483. The reversal of 21487541333474 is 47433314578412.

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 7 ways as a sum of consecutive naturals, for example, 124618829 + ... + 124791135.

It is an arithmetic number, because the mean of its divisors is an integer number (2015325137250).

Almost surely, 2^{21487541333474} is an apocalyptic number.

21487541333474 is a deficient number, since it is larger than the sum of its proper divisors (10757660862526).

21487541333474 is a wasteful number, since it uses less digits than its factorization.

21487541333474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198817.

The product of its digits is 27095040, while the sum is 56.

The spelling of 21487541333474 in words is "twenty-one trillion, four hundred eighty-seven billion, five hundred forty-one million, three hundred thirty-three thousand, four hundred seventy-four".