72400166853 has 16 divisors (see below), whose sum is σ = 110624686080. Its totient is φ = 41258790576.

The previous prime is 72400166851. The next prime is 72400166887. The reversal of 72400166853 is 35866100427.

It is not a de Polignac number, because 72400166853 - 2¹ = 72400166851 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72400166851) 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, 4689333 + ... + 4704746.

It is an arithmetic number, because the mean of its divisors is an integer number (6914042880).

Almost surely, 2^72400166853 is an apocalyptic number.

It is an amenable number.

72400166853 is a deficient number, since it is larger than the sum of its proper divisors (38224519227).

72400166853 is a wasteful number, since it uses less digits than its factorization.

72400166853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9394456.

The product of its (nonzero) digits is 241920, while the sum is 42.

The spelling of 72400166853 in words is "seventy-two billion, four hundred million, one hundred sixty-six thousand, eight hundred fifty-three".