20692755193 has 4 divisors (see below), whose sum is σ = 22573914768. Its totient is φ = 18811595620.

The previous prime is 20692755191. The next prime is 20692755197. The reversal of 20692755193 is 39155729602.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20692755193 - 2¹ = 20692755191 is a prime.

It is a Smith number, since the sum of its digits (49) 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 not an unprimeable number, because it can be changed into a prime (20692755191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 940579771 + ... + 940579792.

It is an arithmetic number, because the mean of its divisors is an integer number (5643478692).

Almost surely, 2^20692755193 is an apocalyptic number.

It is an amenable number.

20692755193 is a deficient number, since it is larger than the sum of its proper divisors (1881159575).

20692755193 is a wasteful number, since it uses less digits than its factorization.

20692755193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1881159574.

The product of its (nonzero) digits is 1020600, while the sum is 49.

The spelling of 20692755193 in words is "twenty billion, six hundred ninety-two million, seven hundred fifty-five thousand, one hundred ninety-three".