20006356401 has 8 divisors (see below), whose sum is σ = 29639046560. Its totient is φ = 13337570916.

The previous prime is 20006356397. The next prime is 20006356423. The reversal of 20006356401 is 10465360002.

20006356401 is a `hidden beast` number, since 20 + 0 + 0 + 635 + 6 + 4 + 0 + 1 = 666.

It is not a de Polignac number, because 20006356401 - 2² = 20006356397 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 740976163 = 20006356401 / (2 + 0 + 0 + 0 + 6 + 3 + 5 + 6 + 4 + 0 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20006356481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 370488055 + ... + 370488108.

It is an arithmetic number, because the mean of its divisors is an integer number (3704880820).

Almost surely, 2^20006356401 is an apocalyptic number.

It is an amenable number.

20006356401 is a deficient number, since it is larger than the sum of its proper divisors (9632690159).

20006356401 is an equidigital number, since it uses as much as digits as its factorization.

20006356401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 740976172 (or 740976166 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The spelling of 20006356401 in words is "twenty billion, six million, three hundred fifty-six thousand, four hundred one".