72551422322 has 16 divisors (see below), whose sum is σ = 112346449152. Its totient is φ = 35102788560.

The previous prime is 72551422303. The next prime is 72551422331. The reversal of 72551422322 is 22322415527.

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, 918548 + ... + 994400.

It is an arithmetic number, because the mean of its divisors is an integer number (7021653072).

Almost surely, 2^72551422322 is an apocalyptic number.

72551422322 is a deficient number, since it is larger than the sum of its proper divisors (39795026830).

72551422322 is a wasteful number, since it uses less digits than its factorization.

72551422322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91313.

The product of its digits is 67200, while the sum is 35.

Adding to 72551422322 its reverse (22322415527), we get a palindrome (94873837849).

The spelling of 72551422322 in words is "seventy-two billion, five hundred fifty-one million, four hundred twenty-two thousand, three hundred twenty-two".