20192756641 has 2 divisors, whose sum is σ = 20192756642. Its totient is φ = 20192756640.

The previous prime is 20192756627. The next prime is 20192756681. The reversal of 20192756641 is 14665729102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14251584400 + 5941172241 = 119380^2 + 77079^2 .

It is a cyclic number.

It is not a de Polignac number, because 20192756641 - 2⁷ = 20192756513 is a prime.

It is a super-3 number, since 3×20192756641³ (a number of 32 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (20192756681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10096378320 + 10096378321.

It is an arithmetic number, because the mean of its divisors is an integer number (10096378321).

Almost surely, 2^20192756641 is an apocalyptic number.

It is an amenable number.

20192756641 is a deficient number, since it is larger than the sum of its proper divisors (1).

20192756641 is an equidigital number, since it uses as much as digits as its factorization.

20192756641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 43.

The spelling of 20192756641 in words is "twenty billion, one hundred ninety-two million, seven hundred fifty-six thousand, six hundred forty-one".