20400140140001 has 4 divisors (see below), whose sum is σ = 20414199507504. Its totient is φ = 20386080772500.

The previous prime is 20400140139997. The next prime is 20400140140049. The reversal of 20400140140001 is 10004104100402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20400140140001 - 2² = 20400140139997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20400140140301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7029681575 + ... + 7029684476.

It is an arithmetic number, because the mean of its divisors is an integer number (5103549876876).

Almost surely, 2^{20400140140001} is an apocalyptic number.

It is an amenable number.

20400140140001 is a deficient number, since it is larger than the sum of its proper divisors (14059367503).

20400140140001 is a wasteful number, since it uses less digits than its factorization.

20400140140001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14059367502.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 20400140140001 its reverse (10004104100402), we get a palindrome (30404244240403).

The spelling of 20400140140001 in words is "twenty trillion, four hundred billion, one hundred forty million, one hundred forty thousand, one".