20941059840 has 72 divisors (see below), whose sum is σ = 66880522128. Its totient is φ = 5584281600.

The previous prime is 20941059751. The next prime is 20941059851. The reversal of 20941059840 is 4895014902.

It is a junction number, because it is equal to n+sod(n) for n = 20941059792 and 20941059801.

It is a congruent number.

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, 2722861 + ... + 2730540.

Almost surely, 2^20941059840 is an apocalyptic number.

20941059840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20941059840 is an abundant number, since it is smaller than the sum of its proper divisors (45939462288).

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

20941059840 is an equidigital number, since it uses as much as digits as its factorization.

20941059840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5453425 (or 5453411 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 42.

The spelling of 20941059840 in words is "twenty billion, nine hundred forty-one million, fifty-nine thousand, eight hundred forty".