20446057541 has 16 divisors (see below), whose sum is σ = 25313299200. Its totient is φ = 16177088304.

The previous prime is 20446057537. The next prime is 20446057549. The reversal of 20446057541 is 14575064402.

It is a happy number.

It is not a de Polignac number, because 20446057541 - 2² = 20446057537 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20446057495 and 20446057504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20446057549) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 649361 + ... + 680118.

It is an arithmetic number, because the mean of its divisors is an integer number (1582081200).

Almost surely, 2^20446057541 is an apocalyptic number.

It is an amenable number.

20446057541 is a deficient number, since it is larger than the sum of its proper divisors (4867241659).

20446057541 is an equidigital number, since it uses as much as digits as its factorization.

20446057541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1329525 (or 1329499 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 38.

The spelling of 20446057541 in words is "twenty billion, four hundred forty-six million, fifty-seven thousand, five hundred forty-one".