72515203206311 has 2 divisors, whose sum is σ = 72515203206312. Its totient is φ = 72515203206310.

The previous prime is 72515203206301. The next prime is 72515203206371. The reversal of 72515203206311 is 11360230251527.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72515203206311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72515203206301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36257601603155 + 36257601603156.

It is an arithmetic number, because the mean of its divisors is an integer number (36257601603156).

Almost surely, 2^{72515203206311} is an apocalyptic number.

72515203206311 is a deficient number, since it is larger than the sum of its proper divisors (1).

72515203206311 is an equidigital number, since it uses as much as digits as its factorization.

72515203206311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75600, while the sum is 38.

Adding to 72515203206311 its reverse (11360230251527), we get a palindrome (83875433457838).

The spelling of 72515203206311 in words is "seventy-two trillion, five hundred fifteen billion, two hundred three million, two hundred six thousand, three hundred eleven".