21033884591284 has 48 divisors (see below), whose sum is σ = 39797356345600. Its totient is φ = 9693279766656.

The previous prime is 21033884591179. The next prime is 21033884591287. The reversal of 21033884591284 is 48219548833012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21033884591287) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32021302 + ... + 32671570.

Almost surely, 2^{21033884591284} is an apocalyptic number.

It is an amenable number.

21033884591284 is a deficient number, since it is larger than the sum of its proper divisors (18763471754316).

21033884591284 is a wasteful number, since it uses less digits than its factorization.

21033884591284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661832 (or 661830 counting only the distinct ones).

The product of its (nonzero) digits is 13271040, while the sum is 58.

The spelling of 21033884591284 in words is "twenty-one trillion, thirty-three billion, eight hundred eighty-four million, five hundred ninety-one thousand, two hundred eighty-four".