20519047699 has 8 divisors (see below), whose sum is σ = 20785069760. Its totient is φ = 20253182976.

The previous prime is 20519047649. The next prime is 20519047721. The reversal of 20519047699 is 99674091502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20519047699 - 2²⁹ = 19982176787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20519047609) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 235537 + ... + 310669.

It is an arithmetic number, because the mean of its divisors is an integer number (2598133720).

Almost surely, 2^20519047699 is an apocalyptic number.

20519047699 is a deficient number, since it is larger than the sum of its proper divisors (266022061).

20519047699 is an equidigital number, since it uses as much as digits as its factorization.

20519047699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78669.

The product of its (nonzero) digits is 1224720, while the sum is 52.

The spelling of 20519047699 in words is "twenty billion, five hundred nineteen million, forty-seven thousand, six hundred ninety-nine".