21731477413712 has 80 divisors (see below), whose sum is σ = 48185562890880. Its totient is φ = 9402996825600.

The previous prime is 21731477413699. The next prime is 21731477413729.

21731477413712 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×21731477413712² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29621663 + ... + 30346430.

It is an arithmetic number, because the mean of its divisors is an integer number (602319536136).

Almost surely, 2^{21731477413712} is an apocalyptic number.

21731477413712 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21731477413712 is an abundant number, since it is smaller than the sum of its proper divisors (26454085477168).

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

21731477413712 is a wasteful number, since it uses less digits than its factorization.

21731477413712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59968212 (or 59968206 counting only the distinct ones).

The product of its digits is 1382976, while the sum is 50.

It can be divided in two parts, 2173147 and 7413712, that added together give a palindrome (9586859).

The spelling of 21731477413712 in words is "twenty-one trillion, seven hundred thirty-one billion, four hundred seventy-seven million, four hundred thirteen thousand, seven hundred twelve".