20541027261 has 8 divisors (see below), whose sum is σ = 27507635680. Its totient is φ = 13634218512.

The previous prime is 20541027259. The next prime is 20541027277. The reversal of 20541027261 is 16272014502.

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

It is not a de Polignac number, because 20541027261 - 2¹ = 20541027259 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 (20541027061) 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, 14949115 + ... + 14950488.

It is an arithmetic number, because the mean of its divisors is an integer number (3438454460).

Almost surely, 2^20541027261 is an apocalyptic number.

It is an amenable number.

20541027261 is a deficient number, since it is larger than the sum of its proper divisors (6966608419).

20541027261 is a wasteful number, since it uses less digits than its factorization.

20541027261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29899835.

The product of its (nonzero) digits is 6720, while the sum is 30.

The spelling of 20541027261 in words is "twenty billion, five hundred forty-one million, twenty-seven thousand, two hundred sixty-one".