20477048759 has 2 divisors, whose sum is σ = 20477048760. Its totient is φ = 20477048758.

The previous prime is 20477048737. The next prime is 20477048789. The reversal of 20477048759 is 95784077402.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20477048759 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20477048759.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20477048789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10238524379 + 10238524380.

It is an arithmetic number, because the mean of its divisors is an integer number (10238524380).

Almost surely, 2^20477048759 is an apocalyptic number.

20477048759 is a deficient number, since it is larger than the sum of its proper divisors (1).

20477048759 is an equidigital number, since it uses as much as digits as its factorization.

20477048759 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3951360, while the sum is 53.

The spelling of 20477048759 in words is "twenty billion, four hundred seventy-seven million, forty-eight thousand, seven hundred fifty-nine".