20541326766 has 8 divisors (see below), whose sum is σ = 41082653544. Its totient is φ = 6847108920.

The previous prime is 20541326747. The next prime is 20541326783. The reversal of 20541326766 is 66762314502.

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

20541326766 is an admirable number.

It is a super-2 number, since 2×20541326766² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1711777225 + ... + 1711777236.

It is an arithmetic number, because the mean of its divisors is an integer number (5135331693).

Almost surely, 2^20541326766 is an apocalyptic number.

20541326766 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20541326766 is a wasteful number, since it uses less digits than its factorization.

20541326766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3423554466.

The product of its (nonzero) digits is 362880, while the sum is 42.

The spelling of 20541326766 in words is "twenty billion, five hundred forty-one million, three hundred twenty-six thousand, seven hundred sixty-six".