20210400001 has 16 divisors (see below), whose sum is σ = 22365849600. Its totient is φ = 18109705680.

The previous prime is 20210399941. The next prime is 20210400019. The reversal of 20210400001 is 10000401202.

It is not a de Polignac number, because 20210400001 - 2²³ = 20202011393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20210400901) 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, 191080 + ... + 277366.

It is an arithmetic number, because the mean of its divisors is an integer number (1397865600).

Almost surely, 2^20210400001 is an apocalyptic number.

It is an amenable number.

20210400001 is a deficient number, since it is larger than the sum of its proper divisors (2155449599).

20210400001 is a wasteful number, since it uses less digits than its factorization.

20210400001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86604.

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 20210400001 its reverse (10000401202), we get a palindrome (30210801203).

The spelling of 20210400001 in words is "twenty billion, two hundred ten million, four hundred thousand, one".