20146750722653 has 4 divisors (see below), whose sum is σ = 20149863157788. Its totient is φ = 20143638287520.

The previous prime is 20146750722641. The next prime is 20146750722691. The reversal of 20146750722653 is 35622705764102.

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 3132429197689 + 17014321524964 = 1769867^2 + 4124842^2 .

It is a cyclic number.

It is not a de Polignac number, because 20146750722653 - 2³⁸ = 19871872815709 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 (20146750722053) 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, 1556207858 + ... + 1556220803.

It is an arithmetic number, because the mean of its divisors is an integer number (5037465789447).

Almost surely, 2^{20146750722653} is an apocalyptic number.

It is an amenable number.

20146750722653 is a deficient number, since it is larger than the sum of its proper divisors (3112435135).

20146750722653 is an equidigital number, since it uses as much as digits as its factorization.

20146750722653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3112435134.

The product of its (nonzero) digits is 4233600, while the sum is 50.

The spelling of 20146750722653 in words is "twenty trillion, one hundred forty-six billion, seven hundred fifty million, seven hundred twenty-two thousand, six hundred fifty-three".