72267503820 has 48 divisors (see below), whose sum is σ = 205369156608. Its totient is φ = 18983701440.

The previous prime is 72267503813. The next prime is 72267503821. The reversal of 72267503820 is 2830576227.

It is not an unprimeable number, because it can be changed into a prime (72267503821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8984476 + ... + 8992515.

It is an arithmetic number, because the mean of its divisors is an integer number (4278524096).

Almost surely, 2^72267503820 is an apocalyptic number.

It is an amenable number.

72267503820 is an abundant number, since it is smaller than the sum of its proper divisors (133101652788).

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

72267503820 is a wasteful number, since it uses less digits than its factorization.

72267503820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17977070 (or 17977068 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 42.

The spelling of 72267503820 in words is "seventy-two billion, two hundred sixty-seven million, five hundred three thousand, eight hundred twenty".