72275650122506 has 4 divisors (see below), whose sum is σ = 108413475183762. Its totient is φ = 36137825061252.

The previous prime is 72275650122499. The next prime is 72275650122523. The reversal of 72275650122506 is 60522105657227.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 55914636356881 + 16361013765625 = 7477609^2 + 4044875^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18068912530625 + ... + 18068912530628.

Almost surely, 2^{72275650122506} is an apocalyptic number.

72275650122506 is a deficient number, since it is larger than the sum of its proper divisors (36137825061256).

72275650122506 is a wasteful number, since it uses less digits than its factorization.

72275650122506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36137825061255.

The product of its (nonzero) digits is 3528000, while the sum is 50.

The spelling of 72275650122506 in words is "seventy-two trillion, two hundred seventy-five billion, six hundred fifty million, one hundred twenty-two thousand, five hundred six".