21143566534112 has 48 divisors (see below), whose sum is σ = 45860224609584. Its totient is φ = 9515556480000.

The previous prime is 21143566534099. The next prime is 21143566534121.

21143566534112 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

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, 297325589 + ... + 297396692.

It is an arithmetic number, because the mean of its divisors is an integer number (955421346033).

Almost surely, 2^{21143566534112} is an apocalyptic number.

21143566534112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21143566534112 is an abundant number, since it is smaller than the sum of its proper divisors (24716658075472).

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

21143566534112 is a wasteful number, since it uses less digits than its factorization.

21143566534112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 594722403 (or 594722395 counting only the distinct ones).

The product of its digits is 518400, while the sum is 44.

It can be divided in two parts, 2114356 and 6534112, that added together give a palindrome (8648468).

The spelling of 21143566534112 in words is "twenty-one trillion, one hundred forty-three billion, five hundred sixty-six million, five hundred thirty-four thousand, one hundred twelve".