20054752889 has 2 divisors, whose sum is σ = 20054752890. Its totient is φ = 20054752888.

The previous prime is 20054752877. The next prime is 20054752897. The reversal of 20054752889 is 98825745002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13362204025 + 6692548864 = 115595^2 + 81808^2 .

It is a cyclic number.

It is not a de Polignac number, because 20054752889 - 2⁴ = 20054752873 is a prime.

It is a super-2 number, since 2×20054752889² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20054757889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10027376444 + 10027376445.

It is an arithmetic number, because the mean of its divisors is an integer number (10027376445).

Almost surely, 2^20054752889 is an apocalyptic number.

It is an amenable number.

20054752889 is a deficient number, since it is larger than the sum of its proper divisors (1).

20054752889 is an equidigital number, since it uses as much as digits as its factorization.

20054752889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1612800, while the sum is 50.

The spelling of 20054752889 in words is "twenty billion, fifty-four million, seven hundred fifty-two thousand, eight hundred eighty-nine".