72213342920 has 32 divisors (see below), whose sum is σ = 162490174200. Its totient is φ = 28883532288.

The previous prime is 72213342919. The next prime is 72213342923. The reversal of 72213342920 is 2924331227.

It can be written as a sum of positive squares in 4 ways, for example, as 56511749284 + 15701593636 = 237722^2 + 125306^2 .

It is not an unprimeable number, because it can be changed into a prime (72213342923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 725612 + ... + 819108.

Almost surely, 2^72213342920 is an apocalyptic number.

It is an amenable number.

72213342920 is an abundant number, since it is smaller than the sum of its proper divisors (90276831280).

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

72213342920 is a wasteful number, since it uses less digits than its factorization.

72213342920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112817 (or 112813 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 35.

The spelling of 72213342920 in words is "seventy-two billion, two hundred thirteen million, three hundred forty-two thousand, nine hundred twenty".