16400799619 has 2 divisors, whose sum is σ = 16400799620. Its totient is φ = 16400799618.

The previous prime is 16400799593. The next prime is 16400799629. The reversal of 16400799619 is 91699700461.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16400799619 is a prime.

It is a super-2 number, since 2×16400799619² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16400799629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8200399809 + 8200399810.

It is an arithmetic number, because the mean of its divisors is an integer number (8200399810).

Almost surely, 2^16400799619 is an apocalyptic number.

16400799619 is a deficient number, since it is larger than the sum of its proper divisors (1).

16400799619 is an equidigital number, since it uses as much as digits as its factorization.

16400799619 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 734832, while the sum is 52.

The spelling of 16400799619 in words is "sixteen billion, four hundred million, seven hundred ninety-nine thousand, six hundred nineteen".