72758051805 has 16 divisors (see below), whose sum is σ = 116899971840. Its totient is φ = 38641931328.

The previous prime is 72758051713. The next prime is 72758051809. The reversal of 72758051805 is 50815085727.

It is not a de Polignac number, because 72758051805 - 2¹⁴ = 72758035421 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 10143982 + ... + 10151151.

It is an arithmetic number, because the mean of its divisors is an integer number (7306248240).

Almost surely, 2^72758051805 is an apocalyptic number.

It is an amenable number.

72758051805 is a deficient number, since it is larger than the sum of its proper divisors (44141920035).

72758051805 is a wasteful number, since it uses less digits than its factorization.

72758051805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20295380.

The product of its (nonzero) digits is 784000, while the sum is 48.

The spelling of 72758051805 in words is "seventy-two billion, seven hundred fifty-eight million, fifty-one thousand, eight hundred five".