20420011530636 has 48 divisors (see below), whose sum is σ = 47926872854784. Its totient is φ = 6766652723776.

The previous prime is 20420011530629. The next prime is 20420011530679. The reversal of 20420011530636 is 63603511002402.

It is a super-2 number, since 2×20420011530636² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20420011530597 and 20420011530606.

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, 20614465 + ... + 21582311.

It is an arithmetic number, because the mean of its divisors is an integer number (998476517808).

Almost surely, 2^{20420011530636} is an apocalyptic number.

It is an amenable number.

20420011530636 is an abundant number, since it is smaller than the sum of its proper divisors (27506861324148).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20420011530636 is a wasteful number, since it uses less digits than its factorization.

20420011530636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 978190 (or 978188 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 33.

The spelling of 20420011530636 in words is "twenty trillion, four hundred twenty billion, eleven million, five hundred thirty thousand, six hundred thirty-six".