20377587877 has 8 divisors (see below), whose sum is σ = 20594298816. Its totient is φ = 20161240032.

The previous prime is 20377587869. The next prime is 20377587883. The reversal of 20377587877 is 77878577302.

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

It is a cyclic number.

It is not a de Polignac number, because 20377587877 - 2³ = 20377587869 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 (20377587677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22818 + ... + 203164.

It is an arithmetic number, because the mean of its divisors is an integer number (2574287352).

Almost surely, 2^20377587877 is an apocalyptic number.

It is an amenable number.

20377587877 is a deficient number, since it is larger than the sum of its proper divisors (216710939).

20377587877 is a wasteful number, since it uses less digits than its factorization.

20377587877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181547.

The product of its (nonzero) digits is 32269440, while the sum is 61.

The spelling of 20377587877 in words is "twenty billion, three hundred seventy-seven million, five hundred eighty-seven thousand, eight hundred seventy-seven".