72506163118 has 8 divisors (see below), whose sum is σ = 108763184520. Its totient is φ = 36251768280.

The previous prime is 72506163083. The next prime is 72506163127. The reversal of 72506163118 is 81136160527.

It is a happy number.

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

It is a congruent number.

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, 586113 + ... + 698956.

It is an arithmetic number, because the mean of its divisors is an integer number (13595398065).

Almost surely, 2^72506163118 is an apocalyptic number.

72506163118 is a deficient number, since it is larger than the sum of its proper divisors (36257021402).

72506163118 is a wasteful number, since it uses less digits than its factorization.

72506163118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1313282.

The product of its (nonzero) digits is 60480, while the sum is 40.

The spelling of 72506163118 in words is "seventy-two billion, five hundred six million, one hundred sixty-three thousand, one hundred eighteen".