72758051806 has 8 divisors (see below), whose sum is σ = 119058630264. Its totient is φ = 33071841720.

The previous prime is 72758051713. The next prime is 72758051809. The reversal of 72758051806 is 60815085727.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 72758051806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72758051809) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1653592065 + ... + 1653592108.

It is an arithmetic number, because the mean of its divisors is an integer number (14882328783).

Almost surely, 2^72758051806 is an apocalyptic number.

72758051806 is a deficient number, since it is larger than the sum of its proper divisors (46300578458).

72758051806 is a wasteful number, since it uses less digits than its factorization.

72758051806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3307184186.

The product of its (nonzero) digits is 940800, while the sum is 49.

The spelling of 72758051806 in words is "seventy-two billion, seven hundred fifty-eight million, fifty-one thousand, eight hundred six".