20054752897 has 2 divisors, whose sum is σ = 20054752898. Its totient is φ = 20054752896.

The previous prime is 20054752889. The next prime is 20054752943. The reversal of 20054752897 is 79825745002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18279310401 + 1775442496 = 135201^2 + 42136^2 .

It is a cyclic number.

It is not a de Polignac number, because 20054752897 - 2³ = 20054752889 is a prime.

It is a super-2 number, since 2×20054752897² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20054752897.

It is not a weakly prime, because it can be changed into another prime (20054752807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10027376448 + 10027376449.

It is an arithmetic number, because the mean of its divisors is an integer number (10027376449).

Almost surely, 2^20054752897 is an apocalyptic number.

It is an amenable number.

20054752897 is a deficient number, since it is larger than the sum of its proper divisors (1).

20054752897 is an equidigital number, since it uses as much as digits as its factorization.

20054752897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1411200, while the sum is 49.

The spelling of 20054752897 in words is "twenty billion, fifty-four million, seven hundred fifty-two thousand, eight hundred ninety-seven".