20667150687 has 32 divisors (see below), whose sum is σ = 30550763520. Its totient is φ = 12368648160.

The previous prime is 20667150671. The next prime is 20667150697. The reversal of 20667150687 is 78605176602.

It is not a de Polignac number, because 20667150687 - 2⁴ = 20667150671 is a prime.

It is a super-2 number, since 2×20667150687² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20667150697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 66612 + ... + 213942.

It is an arithmetic number, because the mean of its divisors is an integer number (954711360).

Almost surely, 2^20667150687 is an apocalyptic number.

20667150687 is a deficient number, since it is larger than the sum of its proper divisors (9883612833).

20667150687 is a wasteful number, since it uses less digits than its factorization.

20667150687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147483.

The product of its (nonzero) digits is 846720, while the sum is 48.

The spelling of 20667150687 in words is "twenty billion, six hundred sixty-seven million, one hundred fifty thousand, six hundred eighty-seven".