72005030618 has 8 divisors (see below), whose sum is σ = 109778161620. Its totient is φ = 35412310080.

The previous prime is 72005030609. The next prime is 72005030621. The reversal of 72005030618 is 81603050027.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 42665794249 + 29339236369 = 206557^2 + 171287^2 .

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, 295102463 + ... + 295102706.

Almost surely, 2^72005030618 is an apocalyptic number.

72005030618 is a deficient number, since it is larger than the sum of its proper divisors (37773131002).

72005030618 is a wasteful number, since it uses less digits than its factorization.

72005030618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 590205232.

The product of its (nonzero) digits is 10080, while the sum is 32.

The spelling of 72005030618 in words is "seventy-two billion, five million, thirty thousand, six hundred eighteen".