21174713760 has 48 divisors (see below), whose sum is σ = 66700349856. Its totient is φ = 5646590208.

The previous prime is 21174713741. The next prime is 21174713779. The reversal of 21174713760 is 6731747112.

It is an interprime number because it is at equal distance from previous prime (21174713741) and next prime (21174713779).

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22056514 + ... + 22057473.

It is an arithmetic number, because the mean of its divisors is an integer number (1389590622).

Almost surely, 2^21174713760 is an apocalyptic number.

21174713760 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21174713760 is an abundant number, since it is smaller than the sum of its proper divisors (45525636096).

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

21174713760 is a wasteful number, since it uses less digits than its factorization.

21174713760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44114005 (or 44113997 counting only the distinct ones).

The product of its (nonzero) digits is 49392, while the sum is 39.

The spelling of 21174713760 in words is "twenty-one billion, one hundred seventy-four million, seven hundred thirteen thousand, seven hundred sixty".