72114409537 has 4 divisors (see below), whose sum is σ = 72857857156. Its totient is φ = 71370961920.

The previous prime is 72114409531. The next prime is 72114409603. The reversal of 72114409537 is 73590441127.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15854839056 + 56259570481 = 125916^2 + 237191^2 .

It is a cyclic number.

It is not a de Polignac number, because 72114409537 - 2³ = 72114409529 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72114409493 and 72114409502.

It is not an unprimeable number, because it can be changed into a prime (72114409531) 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 3 ways as a sum of consecutive naturals, for example, 371723664 + ... + 371723857.

It is an arithmetic number, because the mean of its divisors is an integer number (18214464289).

Almost surely, 2^72114409537 is an apocalyptic number.

It is an amenable number.

72114409537 is a deficient number, since it is larger than the sum of its proper divisors (743447619).

72114409537 is an equidigital number, since it uses as much as digits as its factorization.

72114409537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 743447618.

The product of its (nonzero) digits is 211680, while the sum is 43.

The spelling of 72114409537 in words is "seventy-two billion, one hundred fourteen million, four hundred nine thousand, five hundred thirty-seven".