215152540123513 has 2 divisors, whose sum is σ = 215152540123514. Its totient is φ = 215152540123512.

The previous prime is 215152540123489. The next prime is 215152540123603. The reversal of 215152540123513 is 315321045251512.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 206591982862864 + 8560557260649 = 14373308^2 + 2925843^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-215152540123513 is a prime.

It is a super-2 number, since 2×215152540123513² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (215152540123613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107576270061756 + 107576270061757.

It is an arithmetic number, because the mean of its divisors is an integer number (107576270061757).

Almost surely, 2^{215152540123513} is an apocalyptic number.

It is an amenable number.

215152540123513 is a deficient number, since it is larger than the sum of its proper divisors (1).

215152540123513 is an equidigital number, since it uses as much as digits as its factorization.

215152540123513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 180000, while the sum is 40.

The spelling of 215152540123513 in words is "two hundred fifteen trillion, one hundred fifty-two billion, five hundred forty million, one hundred twenty-three thousand, five hundred thirteen".