72511423277 has 8 divisors (see below), whose sum is σ = 74528232120. Its totient is φ = 70521327360.

The previous prime is 72511423273. The next prime is 72511423279. The reversal of 72511423277 is 77232411527.

It can be written as a sum of positive squares in 4 ways, for example, as 168714121 + 72342709156 = 12989^2 + 268966^2 .

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 72511423277 - 2² = 72511423273 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 (72511423273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6672728 + ... + 6683585.

It is an arithmetic number, because the mean of its divisors is an integer number (9316029015).

Almost surely, 2^72511423277 is an apocalyptic number.

It is an amenable number.

72511423277 is a deficient number, since it is larger than the sum of its proper divisors (2016808843).

72511423277 is a wasteful number, since it uses less digits than its factorization.

72511423277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13356463.

The product of its digits is 164640, while the sum is 41.

The spelling of 72511423277 in words is "seventy-two billion, five hundred eleven million, four hundred twenty-three thousand, two hundred seventy-seven".