20401000146401 has 16 divisors (see below), whose sum is σ = 24459119043840. Its totient is φ = 16645789325760.

The previous prime is 20401000146391. The next prime is 20401000146473. The reversal of 20401000146401 is 10464100010402.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-20401000146401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20401000146481) 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, 707714726 + ... + 707743551.

It is an arithmetic number, because the mean of its divisors is an integer number (1528694940240).

Almost surely, 2^{20401000146401} is an apocalyptic number.

It is an amenable number.

20401000146401 is a deficient number, since it is larger than the sum of its proper divisors (4058118897439).

20401000146401 is a wasteful number, since it uses less digits than its factorization.

20401000146401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1415458384.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 20401000146401 its reverse (10464100010402), we get a palindrome (30865100156803).

The spelling of 20401000146401 in words is "twenty trillion, four hundred one billion, one hundred forty-six thousand, four hundred one".