72411211507537 has 4 divisors (see below), whose sum is σ = 82755670294336. Its totient is φ = 62066752720740.

The previous prime is 72411211507511. The next prime is 72411211507543. The reversal of 72411211507537 is 73570511211427.

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 a de Polignac number, because none of the positive numbers 2^k-72411211507537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72411211507507) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5172229393389 + ... + 5172229393402.

It is an arithmetic number, because the mean of its divisors is an integer number (20688917573584).

Almost surely, 2^{72411211507537} is an apocalyptic number.

It is an amenable number.

72411211507537 is a deficient number, since it is larger than the sum of its proper divisors (10344458786799).

72411211507537 is a wasteful number, since it uses less digits than its factorization.

72411211507537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10344458786798.

The product of its (nonzero) digits is 411600, while the sum is 46.

The spelling of 72411211507537 in words is "seventy-two trillion, four hundred eleven billion, two hundred eleven million, five hundred seven thousand, five hundred thirty-seven".