20013127541077 has 16 divisors (see below), whose sum is σ = 21883058778240. Its totient is φ = 18151625433600.

The previous prime is 20013127541063. The next prime is 20013127541093. The reversal of 20013127541077 is 77014572131002.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20013127541077 - 2³¹ = 20010980057429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20013127541177) 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 15 ways as a sum of consecutive naturals, for example, 163936653 + ... + 164058685.

It is an arithmetic number, because the mean of its divisors is an integer number (1367691173640).

Almost surely, 2^{20013127541077} is an apocalyptic number.

It is an amenable number.

20013127541077 is a deficient number, since it is larger than the sum of its proper divisors (1869931237163).

20013127541077 is a wasteful number, since it uses less digits than its factorization.

20013127541077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156444.

The product of its (nonzero) digits is 82320, while the sum is 40.

Adding to 20013127541077 its reverse (77014572131002), we get a palindrome (97027699672079).

The spelling of 20013127541077 in words is "twenty trillion, thirteen billion, one hundred twenty-seven million, five hundred forty-one thousand, seventy-seven".