20146131155641 has 4 divisors (see below), whose sum is σ = 20161616269284. Its totient is φ = 20130646042000.

The previous prime is 20146131155611. The next prime is 20146131155659. The reversal of 20146131155641 is 14655113164102.

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

It can be written as a sum of positive squares in 2 ways, for example, as 50814627241 + 20095316528400 = 225421^2 + 4482780^2 .

It is a cyclic number.

It is not a de Polignac number, because 20146131155641 - 2⁵ = 20146131155609 is a prime.

It is a super-2 number, since 2×20146131155641² (a number of 27 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20146131155594 and 20146131155603.

It is not an unprimeable number, because it can be changed into a prime (20146131155611) 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, 7742554870 + ... + 7742557471.

It is an arithmetic number, because the mean of its divisors is an integer number (5040404067321).

Almost surely, 2^{20146131155641} is an apocalyptic number.

It is an amenable number.

20146131155641 is a deficient number, since it is larger than the sum of its proper divisors (15485113643).

20146131155641 is a wasteful number, since it uses less digits than its factorization.

20146131155641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15485113642.

The product of its (nonzero) digits is 86400, while the sum is 40.

The spelling of 20146131155641 in words is "twenty trillion, one hundred forty-six billion, one hundred thirty-one million, one hundred fifty-five thousand, six hundred forty-one".