16192799491 has 4 divisors (see below), whose sum is σ = 17664872184. Its totient is φ = 14720726800.

The previous prime is 16192799477. The next prime is 16192799509. The reversal of 16192799491 is 19499729161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19499729161 = 11 ⋅1772702651.

It is a cyclic number.

It is not a de Polignac number, because 16192799491 - 2²³ = 16184410883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16192799431) 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, 736036330 + ... + 736036351.

It is an arithmetic number, because the mean of its divisors is an integer number (4416218046).

Almost surely, 2^16192799491 is an apocalyptic number.

16192799491 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

16192799491 is a deficient number, since it is larger than the sum of its proper divisors (1472072693).

16192799491 is a wasteful number, since it uses less digits than its factorization.

16192799491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1472072692.

The product of its digits is 2204496, while the sum is 58.

The spelling of 16192799491 in words is "sixteen billion, one hundred ninety-two million, seven hundred ninety-nine thousand, four hundred ninety-one".