21506075440036 has 24 divisors (see below), whose sum is σ = 41433723334080. Its totient is φ = 9685805450400.

The previous prime is 21506075440013. The next prime is 21506075440093. The reversal of 21506075440036 is 63004457060512.

It is a super-2 number, since 2×21506075440036² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21506075439974 and 21506075440001.

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, 2242079800 + ... + 2242089391.

It is an arithmetic number, because the mean of its divisors is an integer number (1726405138920).

Almost surely, 2^{21506075440036} is an apocalyptic number.

It is an amenable number.

21506075440036 is a deficient number, since it is larger than the sum of its proper divisors (19927647894044).

21506075440036 is a wasteful number, since it uses less digits than its factorization.

21506075440036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4484169315 (or 4484169313 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 43.

The spelling of 21506075440036 in words is "twenty-one trillion, five hundred six billion, seventy-five million, four hundred forty thousand, thirty-six".