72309193853 has 8 divisors (see below), whose sum is σ = 77873707296. Its totient is φ = 66745004400.

The previous prime is 72309193843. The next prime is 72309193861. The reversal of 72309193853 is 35839190327.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72309193853 - 2²⁶ = 72242084989 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 (72309193823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 586058 + ... + 698628.

It is an arithmetic number, because the mean of its divisors is an integer number (9734213412).

Almost surely, 2^72309193853 is an apocalyptic number.

It is an amenable number.

72309193853 is a deficient number, since it is larger than the sum of its proper divisors (5564513443).

72309193853 is a wasteful number, since it uses less digits than its factorization.

72309193853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161995.

The product of its (nonzero) digits is 1224720, while the sum is 50.

The spelling of 72309193853 in words is "seventy-two billion, three hundred nine million, one hundred ninety-three thousand, eight hundred fifty-three".