21363072045 has 16 divisors (see below), whose sum is σ = 39063903360. Its totient is φ = 9765975744.

The previous prime is 21363072023. The next prime is 21363072061. The reversal of 21363072045 is 54027036312.

It is not a de Polignac number, because 21363072045 - 2¹² = 21363067949 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21363071997 and 21363072015.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101728810 + ... + 101729019.

It is an arithmetic number, because the mean of its divisors is an integer number (2441493960).

Almost surely, 2^21363072045 is an apocalyptic number.

It is an amenable number.

21363072045 is a deficient number, since it is larger than the sum of its proper divisors (17700831315).

21363072045 is a wasteful number, since it uses less digits than its factorization.

21363072045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203457844.

The product of its (nonzero) digits is 30240, while the sum is 33.

The spelling of 21363072045 in words is "twenty-one billion, three hundred sixty-three million, seventy-two thousand, forty-five".