72706540186 has 8 divisors (see below), whose sum is σ = 124639783200. Its totient is φ = 31159945788.

The previous prime is 72706540169. The next prime is 72706540213. The reversal of 72706540186 is 68104560727.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2596662136 + ... + 2596662163.

It is an arithmetic number, because the mean of its divisors is an integer number (15579972900).

Almost surely, 2^72706540186 is an apocalyptic number.

72706540186 is a deficient number, since it is larger than the sum of its proper divisors (51933243014).

72706540186 is a wasteful number, since it uses less digits than its factorization.

72706540186 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5193324308.

The product of its (nonzero) digits is 564480, while the sum is 46.

It can be divided in two parts, 7270 and 6540186, that added together give a palindrome (6547456).

The spelling of 72706540186 in words is "seventy-two billion, seven hundred six million, five hundred forty thousand, one hundred eighty-six".