72426639600 has 720 divisors, whose sum is σ = 303941697280. Its totient is φ = 15601766400.

The previous prime is 72426639577. The next prime is 72426639643. The reversal of 72426639600 is 693662427.

72426639600 is a `hidden beast` number, since 7 + 2 + 4 + 2 + 6 + 6 + 39 + 600 = 666.

It is a tau number, because it is divible by the number of its divisors (720).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

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 143 ways as a sum of consecutive naturals, for example, 158482572 + ... + 158483028.

Almost surely, 2^72426639600 is an apocalyptic number.

72426639600 is a gapful number since it is divisible by the number (70) 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 72426639600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (151970848640).

72426639600 is an abundant number, since it is smaller than the sum of its proper divisors (231515057680).

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

72426639600 is a wasteful number, since it uses less digits than its factorization.

72426639600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 838 (or 824 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 45.

The spelling of 72426639600 in words is "seventy-two billion, four hundred twenty-six million, six hundred thirty-nine thousand, six hundred".