72150789293 has 4 divisors (see below), whose sum is σ = 78709951968. Its totient is φ = 65591626620.

The previous prime is 72150789223. The next prime is 72150789307. The reversal of 72150789293 is 39298705127.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 72150789293 - 2²⁰ = 72149740717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72150789223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3279581321 + ... + 3279581342.

It is an arithmetic number, because the mean of its divisors is an integer number (19677487992).

Almost surely, 2^72150789293 is an apocalyptic number.

It is an amenable number.

72150789293 is a deficient number, since it is larger than the sum of its proper divisors (6559162675).

72150789293 is a wasteful number, since it uses less digits than its factorization.

72150789293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6559162674.

The product of its (nonzero) digits is 1905120, while the sum is 53.

The spelling of 72150789293 in words is "seventy-two billion, one hundred fifty million, seven hundred eighty-nine thousand, two hundred ninety-three".