72478440322 has 64 divisors (see below), whose sum is σ = 118576224000. Its totient is φ = 33099466752.

The previous prime is 72478440277. The next prime is 72478440323. The reversal of 72478440322 is 22304487427.

It is not an unprimeable number, because it can be changed into a prime (72478440323) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 78866179 + ... + 78867097.

It is an arithmetic number, because the mean of its divisors is an integer number (1852753500).

Almost surely, 2^72478440322 is an apocalyptic number.

72478440322 is a deficient number, since it is larger than the sum of its proper divisors (46097783678).

72478440322 is a wasteful number, since it uses less digits than its factorization.

72478440322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1483.

The product of its (nonzero) digits is 602112, while the sum is 43.

The spelling of 72478440322 in words is "seventy-two billion, four hundred seventy-eight million, four hundred forty thousand, three hundred twenty-two".