21476541225645 has 96 divisors (see below), whose sum is σ = 40960244692224. Its totient is φ = 10409197265280.

The previous prime is 21476541225641. The next prime is 21476541225653. The reversal of 21476541225645 is 54652214567412.

21476541225645 is a `hidden beast` number, since 2 + 1 + 4 + 7 + 6 + 54 + 1 + 22 + 564 + 5 = 666.

It is not a de Polignac number, because 21476541225645 - 2² = 21476541225641 is a prime.

It is a super-3 number, since 3×21476541225645³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 21476541225591 and 21476541225600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21476541225641) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 173813427 + ... + 173936943.

It is an arithmetic number, because the mean of its divisors is an integer number (426669215544).

Almost surely, 2^{21476541225645} is an apocalyptic number.

It is an amenable number.

21476541225645 is a deficient number, since it is larger than the sum of its proper divisors (19483703466579).

21476541225645 is a wasteful number, since it uses less digits than its factorization.

21476541225645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126464 (or 126439 counting only the distinct ones).

The product of its digits is 16128000, while the sum is 54.

The spelling of 21476541225645 in words is "twenty-one trillion, four hundred seventy-six billion, five hundred forty-one million, two hundred twenty-five thousand, six hundred forty-five".