72171789482 has 8 divisors (see below), whose sum is σ = 116585198436. Its totient is φ = 33310056672.

The previous prime is 72171789479. The next prime is 72171789497. The reversal of 72171789482 is 28498717127.

It can be written as a sum of positive squares in 2 ways, for example, as 71603872921 + 567916561 = 267589^2 + 23831^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1387919003 + ... + 1387919054.

Almost surely, 2^72171789482 is an apocalyptic number.

72171789482 is a deficient number, since it is larger than the sum of its proper divisors (44413408954).

72171789482 is a wasteful number, since it uses less digits than its factorization.

72171789482 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2775838072.

The product of its digits is 3161088, while the sum is 56.

The spelling of 72171789482 in words is "seventy-two billion, one hundred seventy-one million, seven hundred eighty-nine thousand, four hundred eighty-two".