21163316746704 has 80 divisors (see below), whose sum is σ = 59660147262144. Its totient is φ = 6411182976000.

The previous prime is 21163316746703. The next prime is 21163316746727. The reversal of 21163316746704 is 40764761336112.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21163316746703) 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, 4328269 + ... + 7814124.

Almost surely, 2^{21163316746704} is an apocalyptic number.

21163316746704 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21163316746704 is an abundant number, since it is smaller than the sum of its proper divisors (38496830515440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21163316746704 is a wasteful number, since it uses less digits than its factorization.

21163316746704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12145716 (or 12145710 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 51.

The spelling of 21163316746704 in words is "twenty-one trillion, one hundred sixty-three billion, three hundred sixteen million, seven hundred forty-six thousand, seven hundred four".