20202754561 has 8 divisors (see below), whose sum is σ = 22799347200. Its totient is φ = 17732825040.

The previous prime is 20202754519. The next prime is 20202754567. The reversal of 20202754561 is 16545720202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20202754561 - 2¹⁹ = 20202230273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20202754567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31665441 + ... + 31666078.

It is an arithmetic number, because the mean of its divisors is an integer number (2849918400).

Almost surely, 2^20202754561 is an apocalyptic number.

It is an amenable number.

20202754561 is a deficient number, since it is larger than the sum of its proper divisors (2596592639).

20202754561 is a wasteful number, since it uses less digits than its factorization.

20202754561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63331559.

The product of its (nonzero) digits is 33600, while the sum is 34.

The spelling of 20202754561 in words is "twenty billion, two hundred two million, seven hundred fifty-four thousand, five hundred sixty-one".