419787787913 has 16 divisors (see below), whose sum is σ = 478792104336. Its totient is φ = 364611041280.

The previous prime is 419787787891. The next prime is 419787787921. The reversal of 419787787913 is 319787787914.

It can be written as a sum of positive squares in 8 ways, for example, as 104621196304 + 315166591609 = 323452^2 + 561397^2 .

It is a cyclic number.

It is not a de Polignac number, because 419787787913 - 2¹⁸ = 419787525769 is a prime.

It is not an unprimeable number, because it can be changed into a prime (419787787933) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 652445 + ... + 1124837.

It is an arithmetic number, because the mean of its divisors is an integer number (29924506521).

Almost surely, 2^419787787913 is an apocalyptic number.

It is an amenable number.

419787787913 is a deficient number, since it is larger than the sum of its proper divisors (59004316423).

419787787913 is a wasteful number, since it uses less digits than its factorization.

419787787913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476444.

The product of its digits is 149361408, while the sum is 71.

Subtracting from 419787787913 its reverse (319787787914), we obtain a palindrome (99999999999).

The spelling of 419787787913 in words is "four hundred nineteen billion, seven hundred eighty-seven million, seven hundred eighty-seven thousand, nine hundred thirteen".