20907020436 has 24 divisors (see below), whose sum is σ = 48787026624. Its totient is φ = 6968438400.

The previous prime is 20907020429. The next prime is 20907020437. The reversal of 20907020436 is 63402070902.

It is a super-3 number, since 3×20907020436³ (a number of 32 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 = 20907020397 and 20907020406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20907020437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98361 + ... + 226911.

It is an arithmetic number, because the mean of its divisors is an integer number (2032792776).

Almost surely, 2^20907020436 is an apocalyptic number.

It is an amenable number.

20907020436 is an abundant number, since it is smaller than the sum of its proper divisors (27880006188).

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

20907020436 is a wasteful number, since it uses less digits than its factorization.

20907020436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142111 (or 142109 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 33.

The spelling of 20907020436 in words is "twenty billion, nine hundred seven million, twenty thousand, four hundred thirty-six".