20946811607 has 8 divisors (see below), whose sum is σ = 21099214656. Its totient is φ = 20794943232.

The previous prime is 20946811603. The next prime is 20946811667. The reversal of 20946811607 is 70611864902.

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

It is a cyclic number.

It is not a de Polignac number, because 20946811607 - 2² = 20946811603 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20946811603) 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 7 ways as a sum of consecutive naturals, for example, 54863 + ... + 211904.

It is an arithmetic number, because the mean of its divisors is an integer number (2637401832).

Almost surely, 2^20946811607 is an apocalyptic number.

20946811607 is a deficient number, since it is larger than the sum of its proper divisors (152403049).

20946811607 is a wasteful number, since it uses less digits than its factorization.

20946811607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267337.

The product of its (nonzero) digits is 145152, while the sum is 44.

The spelling of 20946811607 in words is "twenty billion, nine hundred forty-six million, eight hundred eleven thousand, six hundred seven".