20667707576 has 32 divisors (see below), whose sum is σ = 39223578240. Its totient is φ = 10208848608.

The previous prime is 20667707531. The next prime is 20667707579. The reversal of 20667707576 is 67570776602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20667707579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 170315 + ... + 265221.

It is an arithmetic number, because the mean of its divisors is an integer number (1225736820).

Almost surely, 2^20667707576 is an apocalyptic number.

It is an amenable number.

20667707576 is a deficient number, since it is larger than the sum of its proper divisors (18555870664).

20667707576 is a wasteful number, since it uses less digits than its factorization.

20667707576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95243 (or 95239 counting only the distinct ones).

The product of its (nonzero) digits is 5186160, while the sum is 53.

The spelling of 20667707576 in words is "twenty billion, six hundred sixty-seven million, seven hundred seven thousand, five hundred seventy-six".