531118361216441 has 4 divisors (see below), whose sum is σ = 531120152256384. Its totient is φ = 531116570176500.

The previous prime is 531118361216407. The next prime is 531118361216477. The reversal of 531118361216441 is 144612163811135.

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-531118361216441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (531118361210441) 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, 895075085 + ... + 895668266.

It is an arithmetic number, because the mean of its divisors is an integer number (132780038064096).

Almost surely, 2^{531118361216441} is an apocalyptic number.

It is an amenable number.

531118361216441 is a deficient number, since it is larger than the sum of its proper divisors (1791039943).

531118361216441 is a wasteful number, since it uses less digits than its factorization.

531118361216441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1791039942.

The product of its digits is 414720, while the sum is 47.

The spelling of 531118361216441 in words is "five hundred thirty-one trillion, one hundred eighteen billion, three hundred sixty-one million, two hundred sixteen thousand, four hundred forty-one".