19975367899 has 8 divisors (see below), whose sum is σ = 20010914000. Its totient is φ = 19939848192.

The previous prime is 19975367879. The next prime is 19975367953. The reversal of 19975367899 is 99876357991.

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 19975367899 - 2¹⁵ = 19975335131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19975367879) 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, 2039887 + ... + 2049655.

It is an arithmetic number, because the mean of its divisors is an integer number (2501364250).

Almost surely, 2^19975367899 is an apocalyptic number.

19975367899 is a deficient number, since it is larger than the sum of its proper divisors (35546101).

19975367899 is an equidigital number, since it uses as much as digits as its factorization.

19975367899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13197.

The product of its digits is 231472080, while the sum is 73.

The spelling of 19975367899 in words is "nineteen billion, nine hundred seventy-five million, three hundred sixty-seven thousand, eight hundred ninety-nine".