16361494979 has 4 divisors (see below), whose sum is σ = 16803697584. Its totient is φ = 15919292376.

The previous prime is 16361494957. The next prime is 16361494999. The reversal of 16361494979 is 97949416361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97949416361 = 229 ⋅427726709.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16361494979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16361494999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221101247 + ... + 221101320.

It is an arithmetic number, because the mean of its divisors is an integer number (4200924396).

Almost surely, 2^16361494979 is an apocalyptic number.

16361494979 is a deficient number, since it is larger than the sum of its proper divisors (442202605).

16361494979 is an equidigital number, since it uses as much as digits as its factorization.

16361494979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442202604.

The product of its digits is 8817984, while the sum is 59.

The spelling of 16361494979 in words is "sixteen billion, three hundred sixty-one million, four hundred ninety-four thousand, nine hundred seventy-nine".