16311788651 has 8 divisors (see below), whose sum is σ = 16764962880. Its totient is φ = 15863035968.

The previous prime is 16311788621. The next prime is 16311788693. The reversal of 16311788651 is 15688711361.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16311788651 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16311788596 and 16311788605.

It is not an unprimeable number, because it can be changed into a prime (16311788621) 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, 1097906 + ... + 1112663.

It is an arithmetic number, because the mean of its divisors is an integer number (2095620360).

Almost surely, 2^16311788651 is an apocalyptic number.

16311788651 is a deficient number, since it is larger than the sum of its proper divisors (453174229).

16311788651 is a wasteful number, since it uses less digits than its factorization.

16311788651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2210773.

The product of its digits is 241920, while the sum is 47.

The spelling of 16311788651 in words is "sixteen billion, three hundred eleven million, seven hundred eighty-eight thousand, six hundred fifty-one".