72510322153 has 4 divisors (see below), whose sum is σ = 73531594368. Its totient is φ = 71489049940.

The previous prime is 72510322151. The next prime is 72510322177. The reversal of 72510322153 is 35122301527.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 35122301527 = 18743 ⋅1873889.

It is a cyclic number.

It is not a de Polignac number, because 72510322153 - 2¹ = 72510322151 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72510322151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 510636001 + ... + 510636142.

It is an arithmetic number, because the mean of its divisors is an integer number (18382898592).

Almost surely, 2^72510322153 is an apocalyptic number.

It is an amenable number.

72510322153 is a deficient number, since it is larger than the sum of its proper divisors (1021272215).

72510322153 is a wasteful number, since it uses less digits than its factorization.

72510322153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1021272214.

The product of its (nonzero) digits is 12600, while the sum is 31.

The spelling of 72510322153 in words is "seventy-two billion, five hundred ten million, three hundred twenty-two thousand, one hundred fifty-three".