21116732803860 has 48 divisors (see below), whose sum is σ = 59143906616256. Its totient is φ = 5629504484352.

The previous prime is 21116732803721. The next prime is 21116732803871. The reversal of 21116732803860 is 6830823761112.

It is a super-3 number, since 3×21116732803860³ (a number of 41 digits) contains 333 as substring.

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 15 ways as a sum of consecutive naturals, for example, 50548477 + ... + 50964516.

It is an arithmetic number, because the mean of its divisors is an integer number (1232164721172).

Almost surely, 2^{21116732803860} is an apocalyptic number.

21116732803860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21116732803860 is an abundant number, since it is smaller than the sum of its proper divisors (38027173812396).

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

21116732803860 is a wasteful number, since it uses less digits than its factorization.

21116732803860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101516472 (or 101516470 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 48.

The spelling of 21116732803860 in words is "twenty-one trillion, one hundred sixteen billion, seven hundred thirty-two million, eight hundred three thousand, eight hundred sixty".