16131320650 has 24 divisors (see below), whose sum is σ = 30269791404. Its totient is φ = 6395424000.

The previous prime is 16131320627. The next prime is 16131320651. The reversal of 16131320650 is 5602313161.

It can be written as a sum of positive squares in 6 ways, for example, as 5682596689 + 10448723961 = 75383^2 + 102219^2 .

It is not an unprimeable number, because it can be changed into a prime (16131320651) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1421901 + ... + 1433200.

Almost surely, 2^16131320650 is an apocalyptic number.

16131320650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16131320650 is a deficient number, since it is larger than the sum of its proper divisors (14138470754).

16131320650 is a wasteful number, since it uses less digits than its factorization.

16131320650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2855226 (or 2855221 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 28.

The spelling of 16131320650 in words is "sixteen billion, one hundred thirty-one million, three hundred twenty thousand, six hundred fifty".