72729904862 has 8 divisors (see below), whose sum is σ = 110409253416. Its totient is φ = 35926820392.

The previous prime is 72729904861. The next prime is 72729904867. The reversal of 72729904862 is 26840992727.

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

It is a super-2 number, since 2×72729904862² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 72729904798 and 72729904807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72729904861) 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, 219065813 + ... + 219066144.

It is an arithmetic number, because the mean of its divisors is an integer number (13801156677).

Almost surely, 2^72729904862 is an apocalyptic number.

72729904862 is a deficient number, since it is larger than the sum of its proper divisors (37679348554).

72729904862 is a wasteful number, since it uses less digits than its factorization.

72729904862 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438132042.

The product of its (nonzero) digits is 6096384, while the sum is 56.

The spelling of 72729904862 in words is "seventy-two billion, seven hundred twenty-nine million, nine hundred four thousand, eight hundred sixty-two".