72521312705111 has 2 divisors, whose sum is σ = 72521312705112. Its totient is φ = 72521312705110.

The previous prime is 72521312705099. The next prime is 72521312705137. The reversal of 72521312705111 is 11150721312527.

It is a weak prime.

It is an emirp because it is prime and its reverse (11150721312527) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72521312705111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72521312705141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36260656352555 + 36260656352556.

It is an arithmetic number, because the mean of its divisors is an integer number (36260656352556).

Almost surely, 2^{72521312705111} is an apocalyptic number.

72521312705111 is a deficient number, since it is larger than the sum of its proper divisors (1).

72521312705111 is an equidigital number, since it uses as much as digits as its factorization.

72521312705111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29400, while the sum is 38.

The spelling of 72521312705111 in words is "seventy-two trillion, five hundred twenty-one billion, three hundred twelve million, seven hundred five thousand, one hundred eleven".