72408021196 has 96 divisors (see below), whose sum is σ = 153778526720. Its totient is φ = 29222285760.

The previous prime is 72408021163. The next prime is 72408021199. The reversal of 72408021196 is 69112080427.

It is not an unprimeable number, because it can be changed into a prime (72408021199) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34760371 + ... + 34762453.

Almost surely, 2^72408021196 is an apocalyptic number.

72408021196 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 72408021196, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76889263360).

72408021196 is an abundant number, since it is smaller than the sum of its proper divisors (81370505524).

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

72408021196 is a wasteful number, since it uses less digits than its factorization.

72408021196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2332 (or 2292 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 40.

The spelling of 72408021196 in words is "seventy-two billion, four hundred eight million, twenty-one thousand, one hundred ninety-six".