20519048663 has 2 divisors, whose sum is σ = 20519048664. Its totient is φ = 20519048662.

The previous prime is 20519048657. The next prime is 20519048681. The reversal of 20519048663 is 36684091502.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20519048663 - 2¹⁶ = 20518983127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20519048063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10259524331 + 10259524332.

It is an arithmetic number, because the mean of its divisors is an integer number (10259524332).

Almost surely, 2^20519048663 is an apocalyptic number.

20519048663 is a deficient number, since it is larger than the sum of its proper divisors (1).

20519048663 is an equidigital number, since it uses as much as digits as its factorization.

20519048663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 311040, while the sum is 44.

The spelling of 20519048663 in words is "twenty billion, five hundred nineteen million, forty-eight thousand, six hundred sixty-three".