20766960087 has 16 divisors (see below), whose sum is σ = 27897569280. Its totient is φ = 13740660000.

The previous prime is 20766960041. The next prime is 20766960101. The reversal of 20766960087 is 78006966702.

It is not a de Polignac number, because 20766960087 - 2⁶ = 20766960023 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20766960587) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 501489 + ... + 541317.

It is an arithmetic number, because the mean of its divisors is an integer number (1743598080).

Almost surely, 2^20766960087 is an apocalyptic number.

20766960087 is a deficient number, since it is larger than the sum of its proper divisors (7130609193).

20766960087 is a wasteful number, since it uses less digits than its factorization.

20766960087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41134.

The product of its (nonzero) digits is 1524096, while the sum is 51.

The spelling of 20766960087 in words is "twenty billion, seven hundred sixty-six million, nine hundred sixty thousand, eighty-seven".