21133046145446 has 16 divisors (see below), whose sum is σ = 31864465215024. Its totient is φ = 10511559972864.

The previous prime is 21133046145427. The next prime is 21133046145461. The reversal of 21133046145446 is 64454164033112.

It is a junction number, because it is equal to n+sod(n) for n = 21133046145397 and 21133046145406.

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 7 ways as a sum of consecutive naturals, for example, 19318526 + ... + 20383118.

It is an arithmetic number, because the mean of its divisors is an integer number (1991529075939).

Almost surely, 2^{21133046145446} is an apocalyptic number.

21133046145446 is a deficient number, since it is larger than the sum of its proper divisors (10731419069578).

21133046145446 is a wasteful number, since it uses less digits than its factorization.

21133046145446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1116215.

The product of its (nonzero) digits is 829440, while the sum is 44.

The spelling of 21133046145446 in words is "twenty-one trillion, one hundred thirty-three billion, forty-six million, one hundred forty-five thousand, four hundred forty-six".