16650742761 has 24 divisors (see below), whose sum is σ = 24514776000. Its totient is φ = 10887341472.

The previous prime is 16650742727. The next prime is 16650742763. The reversal of 16650742761 is 16724705661.

16650742761 is a `hidden beast` number, since 1 + 66 + 507 + 4 + 27 + 61 = 666.

It is not a de Polignac number, because 16650742761 - 2⁶ = 16650742697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16650742763) 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 23 ways as a sum of consecutive naturals, for example, 197395 + ... + 268823.

It is an arithmetic number, because the mean of its divisors is an integer number (1021449000).

Almost surely, 2^16650742761 is an apocalyptic number.

It is an amenable number.

16650742761 is a deficient number, since it is larger than the sum of its proper divisors (7864033239).

16650742761 is a wasteful number, since it uses less digits than its factorization.

16650742761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71933 (or 71930 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 45.

The spelling of 16650742761 in words is "sixteen billion, six hundred fifty million, seven hundred forty-two thousand, seven hundred sixty-one".