3877665520 has 20 divisors (see below), whose sum is σ = 9015572520. Its totient is φ = 1551066176.

The previous prime is 3877665479. The next prime is 3877665523. The reversal of 3877665520 is 255667783.

3877665520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3877665523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24235330 + ... + 24235489.

It is an arithmetic number, because the mean of its divisors is an integer number (450778626).

Almost surely, 2^3877665520 is an apocalyptic number.

It is an amenable number.

3877665520 is an abundant number, since it is smaller than the sum of its proper divisors (5137907000).

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

3877665520 is a wasteful number, since it uses less digits than its factorization.

3877665520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48470832 (or 48470826 counting only the distinct ones).

The product of its (nonzero) digits is 2116800, while the sum is 49.

The square root of 3877665520 is about 62270.9042812131. The cubic root of 3877665520 is about 1571.0503904423.

The spelling of 3877665520 in words is "three billion, eight hundred seventy-seven million, six hundred sixty-five thousand, five hundred twenty".