20477048737 has 2 divisors, whose sum is σ = 20477048738. Its totient is φ = 20477048736.

The previous prime is 20477048717. The next prime is 20477048759. The reversal of 20477048737 is 73784077402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20467308096 + 9740641 = 143064^2 + 3121^2 .

It is a cyclic number.

It is not a de Polignac number, because 20477048737 - 2²⁷ = 20342831009 is a prime.

It is not a weakly prime, because it can be changed into another prime (20477048707) 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 as a sum of consecutive naturals, namely, 10238524368 + 10238524369.

It is an arithmetic number, because the mean of its divisors is an integer number (10238524369).

Almost surely, 2^20477048737 is an apocalyptic number.

It is an amenable number.

20477048737 is a deficient number, since it is larger than the sum of its proper divisors (1).

20477048737 is an equidigital number, since it uses as much as digits as its factorization.

20477048737 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1843968, while the sum is 49.

The spelling of 20477048737 in words is "twenty billion, four hundred seventy-seven million, forty-eight thousand, seven hundred thirty-seven".