21354612716763 has 24 divisors (see below), whose sum is σ = 31511799654192. Its totient is φ = 13930349704128.

The previous prime is 21354612716761. The next prime is 21354612716803. The reversal of 21354612716763 is 36761721645312.

21354612716763 is a `hidden beast` number, since 2 + 1 + 3 + 5 + 4 + 612 + 7 + 16 + 7 + 6 + 3 = 666.

It is not a de Polignac number, because 21354612716763 - 2¹ = 21354612716761 is a prime.

It is a super-2 number, since 2×21354612716763² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21354612716761) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 59833581 + ... + 60189422.

It is an arithmetic number, because the mean of its divisors is an integer number (1312991652258).

Almost surely, 2^{21354612716763} is an apocalyptic number.

21354612716763 is a deficient number, since it is larger than the sum of its proper divisors (10157186937429).

21354612716763 is a wasteful number, since it uses less digits than its factorization.

21354612716763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120023435 (or 120023432 counting only the distinct ones).

The product of its digits is 7620480, while the sum is 54.

The spelling of 21354612716763 in words is "twenty-one trillion, three hundred fifty-four billion, six hundred twelve million, seven hundred sixteen thousand, seven hundred sixty-three".