21611241713612 has 6 divisors (see below), whose sum is σ = 37819672998828. Its totient is φ = 10805620856804.

The previous prime is 21611241713561. The next prime is 21611241713617. The reversal of 21611241713612 is 21631714211612.

It is not an unprimeable number, because it can be changed into a prime (21611241713617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2701405214198 + ... + 2701405214205.

It is an arithmetic number, because the mean of its divisors is an integer number (6303278833138).

Almost surely, 2^{21611241713612} is an apocalyptic number.

It is an amenable number.

21611241713612 is a deficient number, since it is larger than the sum of its proper divisors (16208431285216).

21611241713612 is a wasteful number, since it uses less digits than its factorization.

21611241713612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5402810428407 (or 5402810428405 counting only the distinct ones).

The product of its digits is 24192, while the sum is 38.

The spelling of 21611241713612 in words is "twenty-one trillion, six hundred eleven billion, two hundred forty-one million, seven hundred thirteen thousand, six hundred twelve".