72481919896 has 32 divisors (see below), whose sum is σ = 139891994640. Its totient is φ = 35181813888.

The previous prime is 72481919893. The next prime is 72481919977. The reversal of 72481919896 is 69891918427.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72481919893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145251 + ... + 407506.

Almost surely, 2^72481919896 is an apocalyptic number.

It is an amenable number.

72481919896 is a deficient number, since it is larger than the sum of its proper divisors (67410074744).

72481919896 is a wasteful number, since it uses less digits than its factorization.

72481919896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553243 (or 553239 counting only the distinct ones).

The product of its digits is 15676416, while the sum is 64.

The spelling of 72481919896 in words is "seventy-two billion, four hundred eighty-one million, nine hundred nineteen thousand, eight hundred ninety-six".