20507727401 has 12 divisors (see below), whose sum is σ = 24191930880. Its totient is φ = 17330470920.

The previous prime is 20507727391. The next prime is 20507727403. The reversal of 20507727401 is 10472770502.

It is not a de Polignac number, because 20507727401 - 2²² = 20503533097 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20507727403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2943881 + ... + 2950838.

It is an arithmetic number, because the mean of its divisors is an integer number (2015994240).

Almost surely, 2^20507727401 is an apocalyptic number.

It is an amenable number.

20507727401 is a deficient number, since it is larger than the sum of its proper divisors (3684203479).

20507727401 is an equidigital number, since it uses as much as digits as its factorization.

20507727401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5894804 (or 5894797 counting only the distinct ones).

The product of its (nonzero) digits is 27440, while the sum is 35.

The spelling of 20507727401 in words is "twenty billion, five hundred seven million, seven hundred twenty-seven thousand, four hundred one".