16361718631 has 4 divisors (see below), whose sum is σ = 16709840352. Its totient is φ = 16013596912.

The previous prime is 16361718617. The next prime is 16361718643. The reversal of 16361718631 is 13681716361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13681716361 = 14369 ⋅952169.

It is a cyclic number.

It is not a de Polignac number, because 16361718631 - 2¹¹ = 16361716583 is a prime.

It is a super-2 number, since 2×16361718631² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16361718601) 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, 174060790 + ... + 174060883.

It is an arithmetic number, because the mean of its divisors is an integer number (4177460088).

Almost surely, 2^16361718631 is an apocalyptic number.

16361718631 is a deficient number, since it is larger than the sum of its proper divisors (348121721).

16361718631 is an equidigital number, since it uses as much as digits as its factorization.

16361718631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348121720.

The product of its digits is 108864, while the sum is 43.

The spelling of 16361718631 in words is "sixteen billion, three hundred sixty-one million, seven hundred eighteen thousand, six hundred thirty-one".