20541360477 has 16 divisors (see below), whose sum is σ = 29881058112. Its totient is φ = 12448177920.

The previous prime is 20541360473. The next prime is 20541360529. The reversal of 20541360477 is 77406314502.

It is not a de Polignac number, because 20541360477 - 2² = 20541360473 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20541360473) 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, 472773 + ... + 514389.

It is an arithmetic number, because the mean of its divisors is an integer number (1867566132).

Almost surely, 2^20541360477 is an apocalyptic number.

It is an amenable number.

20541360477 is a deficient number, since it is larger than the sum of its proper divisors (9339697635).

20541360477 is a wasteful number, since it uses less digits than its factorization.

20541360477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56588.

The product of its (nonzero) digits is 141120, while the sum is 39.

Adding to 20541360477 its reverse (77406314502), we get a palindrome (97947674979).

The spelling of 20541360477 in words is "twenty billion, five hundred forty-one million, three hundred sixty thousand, four hundred seventy-seven".