72144435800 has 48 divisors (see below), whose sum is σ = 175028685840. Its totient is φ = 27603086720.

The previous prime is 72144435799. The next prime is 72144435817. The reversal of 72144435800 is 853444127.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7837187 + ... + 7846386.

It is an arithmetic number, because the mean of its divisors is an integer number (3646430955).

Almost surely, 2^72144435800 is an apocalyptic number.

It is an amenable number.

72144435800 is an abundant number, since it is smaller than the sum of its proper divisors (102884250040).

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

72144435800 is a wasteful number, since it uses less digits than its factorization.

72144435800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15683612 (or 15683603 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 38.

Adding to 72144435800 its reverse (853444127), we get a palindrome (72997879927).

The spelling of 72144435800 in words is "seventy-two billion, one hundred forty-four million, four hundred thirty-five thousand, eight hundred".