72179028478 has 8 divisors (see below), whose sum is σ = 108280188720. Its totient is φ = 36085632240.

The previous prime is 72179028473. The next prime is 72179028491. The reversal of 72179028478 is 87482097127.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72179028473) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1917703 + ... + 1954978.

It is an arithmetic number, because the mean of its divisors is an integer number (13535023590).

Almost surely, 2^72179028478 is an apocalyptic number.

72179028478 is a deficient number, since it is larger than the sum of its proper divisors (36101160242).

72179028478 is a wasteful number, since it uses less digits than its factorization.

72179028478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3882002.

The product of its (nonzero) digits is 3161088, while the sum is 55.

The spelling of 72179028478 in words is "seventy-two billion, one hundred seventy-nine million, twenty-eight thousand, four hundred seventy-eight".