6172238556 has 180 divisors, whose sum is σ = 17827696656. Its totient is φ = 1860693120.

The previous prime is 6172238507. The next prime is 6172238563. The reversal of 6172238556 is 6558322716.

6172238556 is a `hidden beast` number, since 6 + 1 + 72 + 23 + 8 + 556 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 12270601 + ... + 12271103.

Almost surely, 2^6172238556 is an apocalyptic number.

6172238556 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6172238556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8913848328).

6172238556 is an abundant number, since it is smaller than the sum of its proper divisors (11655458100).

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

6172238556 is a wasteful number, since it uses less digits than its factorization.

6172238556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 854 (or 832 counting only the distinct ones).

The product of its digits is 604800, while the sum is 45.

The square root of 6172238556 is about 78563.5956152721. The cubic root of 6172238556 is about 1834.3444964193.

The spelling of 6172238556 in words is "six billion, one hundred seventy-two million, two hundred thirty-eight thousand, five hundred fifty-six".