21163466440316 has 24 divisors (see below), whose sum is σ = 38077207116816. Its totient is φ = 10284868408320.

The previous prime is 21163466440313. The next prime is 21163466440349. The reversal of 21163466440316 is 61304466436112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21163466440313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75359525 + ... + 75639836.

It is an arithmetic number, because the mean of its divisors is an integer number (1586550296534).

Almost surely, 2^{21163466440316} is an apocalyptic number.

It is an amenable number.

21163466440316 is a deficient number, since it is larger than the sum of its proper divisors (16913740676500).

21163466440316 is a wasteful number, since it uses less digits than its factorization.

21163466440316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151000349 (or 151000347 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 47.

The spelling of 21163466440316 in words is "twenty-one trillion, one hundred sixty-three billion, four hundred sixty-six million, four hundred forty thousand, three hundred sixteen".