6171977920 has 28 divisors (see below), whose sum is σ = 14697023184. Its totient is φ = 2468791040.

The previous prime is 6171977893. The next prime is 6171977921. The reversal of 6171977920 is 297791716.

It is a super-3 number, since 3×6171977920³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (6171977921) 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, 9643396 + ... + 9644035.

Almost surely, 2^6171977920 is an apocalyptic number.

It is an amenable number.

6171977920 is an abundant number, since it is smaller than the sum of its proper divisors (8525045264).

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

6171977920 is a wasteful number, since it uses less digits than its factorization.

6171977920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19287448 (or 19287438 counting only the distinct ones).

The product of its (nonzero) digits is 333396, while the sum is 49.

The square root of 6171977920 is about 78561.9368396681. The cubic root of 6171977920 is about 1834.3186763467.

The spelling of 6171977920 in words is "six billion, one hundred seventy-one million, nine hundred seventy-seven thousand, nine hundred twenty".