72309509430 has 16 divisors (see below), whose sum is σ = 173542822704. Its totient is φ = 19282535840.

The previous prime is 72309509423. The next prime is 72309509471. The reversal of 72309509430 is 3490590327.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1205158461 + ... + 1205158520.

It is an arithmetic number, because the mean of its divisors is an integer number (10846426419).

Almost surely, 2^72309509430 is an apocalyptic number.

72309509430 is an abundant number, since it is smaller than the sum of its proper divisors (101233313274).

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

72309509430 is a wasteful number, since it uses less digits than its factorization.

72309509430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2410316991.

The product of its (nonzero) digits is 204120, while the sum is 42.

The spelling of 72309509430 in words is "seventy-two billion, three hundred nine million, five hundred nine thousand, four hundred thirty".