19135520713 has 4 divisors (see below), whose sum is σ = 19136429460. Its totient is φ = 19134611968.

The previous prime is 19135520693. The next prime is 19135520777. The reversal of 19135520713 is 31702553191.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 744634944 + 18390885769 = 27288^2 + 135613^2 .

It is a cyclic number.

It is not a de Polignac number, because 19135520713 - 2¹³ = 19135512521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19135520213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 422020 + ... + 465157.

It is an arithmetic number, because the mean of its divisors is an integer number (4784107365).

Almost surely, 2^19135520713 is an apocalyptic number.

It is an amenable number.

19135520713 is a deficient number, since it is larger than the sum of its proper divisors (908747).

19135520713 is an equidigital number, since it uses as much as digits as its factorization.

19135520713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 908746.

The product of its (nonzero) digits is 28350, while the sum is 37.

The spelling of 19135520713 in words is "nineteen billion, one hundred thirty-five million, five hundred twenty thousand, seven hundred thirteen".