72515203206371 has 2 divisors, whose sum is σ = 72515203206372. Its totient is φ = 72515203206370.

The previous prime is 72515203206311. The next prime is 72515203206427. The reversal of 72515203206371 is 17360230251527.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72515203206371 is a prime.

It is a super-2 number, since 2×72515203206371² (a number of 29 digits) contains 22 as substring.

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, 36257601603185 + 36257601603186.

It is an arithmetic number, because the mean of its divisors is an integer number (36257601603186).

Almost surely, 2^{72515203206371} is an apocalyptic number.

72515203206371 is a deficient number, since it is larger than the sum of its proper divisors (1).

72515203206371 is an equidigital number, since it uses as much as digits as its factorization.

72515203206371 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 529200, while the sum is 44.

Adding to 72515203206371 its reverse (17360230251527), we get a palindrome (89875433457898).

The spelling of 72515203206371 in words is "seventy-two trillion, five hundred fifteen billion, two hundred three million, two hundred six thousand, three hundred seventy-one".