17971772084 has 48 divisors (see below), whose sum is σ = 36859350528. Its totient is φ = 7506723168.

The previous prime is 17971772069. The next prime is 17971772111. The reversal of 17971772084 is 48027717971.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 546287 + ... + 578249.

It is an arithmetic number, because the mean of its divisors is an integer number (767903136).

Almost surely, 2^17971772084 is an apocalyptic number.

17971772084 is a gapful number since it is divisible by the number (14) 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 17971772084, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18429675264).

17971772084 is an abundant number, since it is smaller than the sum of its proper divisors (18887578444).

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

17971772084 is a wasteful number, since it uses less digits than its factorization.

17971772084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32484 (or 32482 counting only the distinct ones).

The product of its (nonzero) digits is 1382976, while the sum is 53.

The spelling of 17971772084 in words is "seventeen billion, nine hundred seventy-one million, seven hundred seventy-two thousand, eighty-four".