20401641011061 has 8 divisors (see below), whose sum is σ = 30224653349760. Its totient is φ = 13601094007356.

The previous prime is 20401641011023. The next prime is 20401641011077. The reversal of 20401641011061 is 16011014610402.

20401641011061 is a `hidden beast` number, since 2 + 0 + 4 + 0 + 1 + 641 + 0 + 1 + 10 + 6 + 1 = 666.

It is not a de Polignac number, because 20401641011061 - 2¹⁸ = 20401640748917 is a prime.

It is a super-2 number, since 2×20401641011061² (a number of 27 digits) contains 22 as substring.

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: 755616333743 = 20401641011061 / (2 + 0 + 4 + 0 + 1 + 6 + 4 + 1 + 0 + 1 + 1 + 0 + 6 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20401641011861) 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, 377808166845 + ... + 377808166898.

It is an arithmetic number, because the mean of its divisors is an integer number (3778081668720).

Almost surely, 2^{20401641011061} is an apocalyptic number.

It is an amenable number.

20401641011061 is a deficient number, since it is larger than the sum of its proper divisors (9823012338699).

20401641011061 is an equidigital number, since it uses as much as digits as its factorization.

20401641011061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 755616333752 (or 755616333746 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

Adding to 20401641011061 its reverse (16011014610402), we get a palindrome (36412655621463).

The spelling of 20401641011061 in words is "twenty trillion, four hundred one billion, six hundred forty-one million, eleven thousand, sixty-one".