20401110007 has 4 divisors (see below), whose sum is σ = 20480492016. Its totient is φ = 20321728000.

The previous prime is 20401109999. The next prime is 20401110011. The reversal of 20401110007 is 70001110402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20401110007 - 2³ = 20401109999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20401110077) 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, 39690619 + ... + 39691132.

It is an arithmetic number, because the mean of its divisors is an integer number (5120123004).

Almost surely, 2^20401110007 is an apocalyptic number.

20401110007 is a deficient number, since it is larger than the sum of its proper divisors (79382009).

20401110007 is an equidigital number, since it uses as much as digits as its factorization.

20401110007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79382008.

The product of its (nonzero) digits is 56, while the sum is 16.

Adding to 20401110007 its reverse (70001110402), we get a palindrome (90402220409).

The spelling of 20401110007 in words is "twenty billion, four hundred one million, one hundred ten thousand, seven".