72166523046 has 16 divisors (see below), whose sum is σ = 144592178544. Its totient is φ = 24012318944.

The previous prime is 72166523021. The next prime is 72166523089. The reversal of 72166523046 is 64032566127.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 72166522989 and 72166523007.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10793565 + ... + 10800248.

It is an arithmetic number, because the mean of its divisors is an integer number (9037011159).

Almost surely, 2^72166523046 is an apocalyptic number.

72166523046 is an abundant number, since it is smaller than the sum of its proper divisors (72425655498).

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

72166523046 is a wasteful number, since it uses less digits than its factorization.

72166523046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21594375.

The product of its (nonzero) digits is 362880, while the sum is 42.

The spelling of 72166523046 in words is "seventy-two billion, one hundred sixty-six million, five hundred twenty-three thousand, forty-six".