72507389808 has 160 divisors (see below), whose sum is σ = 222125338624. Its totient is φ = 19948363776.

The previous prime is 72507389803. The next prime is 72507389837. The reversal of 72507389808 is 80898370527.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72507389803) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 1175841 + ... + 1235967.

Almost surely, 2^72507389808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 72507389808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111062669312).

72507389808 is an abundant number, since it is smaller than the sum of its proper divisors (149617948816).

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

72507389808 is a wasteful number, since it uses less digits than its factorization.

72507389808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60279 (or 60273 counting only the distinct ones).

The product of its (nonzero) digits is 6773760, while the sum is 57.

The spelling of 72507389808 in words is "seventy-two billion, five hundred seven million, three hundred eighty-nine thousand, eight hundred eight".