6171421566 has 32 divisors (see below), whose sum is σ = 13149105408. Its totient is φ = 1924248960.

The previous prime is 6171421541. The next prime is 6171421577. The reversal of 6171421566 is 6651241716.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 168970 + ... + 202221.

It is an arithmetic number, because the mean of its divisors is an integer number (410909544).

Almost surely, 2^6171421566 is an apocalyptic number.

6171421566 is an abundant number, since it is smaller than the sum of its proper divisors (6977683842).

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

6171421566 is a wasteful number, since it uses less digits than its factorization.

6171421566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371376.

The product of its digits is 60480, while the sum is 39.

The square root of 6171421566 is about 78558.3958975742. The cubic root of 6171421566 is about 1834.2635583488.

The spelling of 6171421566 in words is "six billion, one hundred seventy-one million, four hundred twenty-one thousand, five hundred sixty-six".