72072507116 has 6 divisors (see below), whose sum is σ = 126126887460. Its totient is φ = 36036253556.

The previous prime is 72072507109. The next prime is 72072507119. The reversal of 72072507116 is 61170527027.

It is a self number, because there is not a number n which added to its sum of digits gives 72072507116.

It is not an unprimeable number, because it can be changed into a prime (72072507119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9009063386 + ... + 9009063393.

It is an arithmetic number, because the mean of its divisors is an integer number (21021147910).

Almost surely, 2^72072507116 is an apocalyptic number.

It is an amenable number.

72072507116 is a deficient number, since it is larger than the sum of its proper divisors (54054380344).

72072507116 is a wasteful number, since it uses less digits than its factorization.

72072507116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18018126783 (or 18018126781 counting only the distinct ones).

The product of its (nonzero) digits is 41160, while the sum is 38.

The spelling of 72072507116 in words is "seventy-two billion, seventy-two million, five hundred seven thousand, one hundred sixteen".