72171429336 has 48 divisors (see below), whose sum is σ = 203962739760. Its totient is φ = 23011179840.

The previous prime is 72171429329. The next prime is 72171429353. The reversal of 72171429336 is 63392417127.

72171429336 is a `hidden beast` number, since 7 + 217 + 1 + 429 + 3 + 3 + 6 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 72171429291 and 72171429300.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 21789235 + ... + 21792546.

It is an arithmetic number, because the mean of its divisors is an integer number (4249223745).

Almost surely, 2^72171429336 is an apocalyptic number.

It is an amenable number.

72171429336 is an abundant number, since it is smaller than the sum of its proper divisors (131791310424).

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

72171429336 is a wasteful number, since it uses less digits than its factorization.

72171429336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43581816 (or 43581809 counting only the distinct ones).

The product of its digits is 381024, while the sum is 45.

The spelling of 72171429336 in words is "seventy-two billion, one hundred seventy-one million, four hundred twenty-nine thousand, three hundred thirty-six".