72163560241031 has 16 divisors (see below), whose sum is σ = 86813736380160. Its totient is φ = 58598690440320.

The previous prime is 72163560240991. The next prime is 72163560241043. The reversal of 72163560241031 is 13014206536127.

It is a cyclic number.

It is not a de Polignac number, because 72163560241031 - 2¹⁰ = 72163560240007 is a prime.

It is a super-2 number, since 2×72163560241031² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72163560241031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72163560241061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27940496 + ... + 30413786.

It is an arithmetic number, because the mean of its divisors is an integer number (5425858523760).

Almost surely, 2^{72163560241031} is an apocalyptic number.

72163560241031 is a deficient number, since it is larger than the sum of its proper divisors (14650176139129).

72163560241031 is a wasteful number, since it uses less digits than its factorization.

72163560241031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2692694.

The product of its (nonzero) digits is 181440, while the sum is 41.

Adding to 72163560241031 its reverse (13014206536127), we get a palindrome (85177766777158).

The spelling of 72163560241031 in words is "seventy-two trillion, one hundred sixty-three billion, five hundred sixty million, two hundred forty-one thousand, thirty-one".