72478440330 has 32 divisors (see below), whose sum is σ = 173978959104. Its totient is φ = 19324172736.

The previous prime is 72478440323. The next prime is 72478440337. The reversal of 72478440330 is 3304487427.

It is an interprime number because it is at equal distance from previous prime (72478440323) and next prime (72478440337).

It is not an unprimeable number, because it can be changed into a prime (72478440337) 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, 38049 + ... + 382628.

It is an arithmetic number, because the mean of its divisors is an integer number (5436842472).

Almost surely, 2^72478440330 is an apocalyptic number.

72478440330 is an abundant number, since it is smaller than the sum of its proper divisors (101500518774).

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

72478440330 is a wasteful number, since it uses less digits than its factorization.

72478440330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426430.

The product of its (nonzero) digits is 451584, while the sum is 42.

The spelling of 72478440330 in words is "seventy-two billion, four hundred seventy-eight million, four hundred forty thousand, three hundred thirty".