72311440735 has 8 divisors (see below), whose sum is σ = 86802319296. Its totient is φ = 57830092320.

The previous prime is 72311440711. The next prime is 72311440741. The reversal of 72311440735 is 53704411327.

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

It is not a de Polignac number, because 72311440735 - 2²⁷ = 72177223007 is a prime.

It is a super-2 number, since 2×72311440735² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72311440694 and 72311440703.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2365831 + ... + 2396200.

It is an arithmetic number, because the mean of its divisors is an integer number (10850289912).

Almost surely, 2^72311440735 is an apocalyptic number.

72311440735 is a deficient number, since it is larger than the sum of its proper divisors (14490878561).

72311440735 is a wasteful number, since it uses less digits than its factorization.

72311440735 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4765073.

The product of its (nonzero) digits is 70560, while the sum is 37.

The spelling of 72311440735 in words is "seventy-two billion, three hundred eleven million, four hundred forty thousand, seven hundred thirty-five".