20835251141 has 4 divisors (see below), whose sum is σ = 20845521900. Its totient is φ = 20824980384.

The previous prime is 20835251093. The next prime is 20835251147. The reversal of 20835251141 is 14115253802.

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 19229646241 + 1605604900 = 138671^2 + 40070^2 .

It is a cyclic number.

It is not a de Polignac number, because 20835251141 - 2⁶ = 20835251077 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20835251098 and 20835251107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20835251147) 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, 5132336 + ... + 5136393.

It is an arithmetic number, because the mean of its divisors is an integer number (5211380475).

Almost surely, 2^20835251141 is an apocalyptic number.

It is an amenable number.

20835251141 is a deficient number, since it is larger than the sum of its proper divisors (10270759).

20835251141 is a wasteful number, since it uses less digits than its factorization.

20835251141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10270758.

The product of its (nonzero) digits is 9600, while the sum is 32.

The spelling of 20835251141 in words is "twenty billion, eight hundred thirty-five million, two hundred fifty-one thousand, one hundred forty-one".