2516271206989 has 2 divisors, whose sum is σ = 2516271206990. Its totient is φ = 2516271206988.

The previous prime is 2516271206971. The next prime is 2516271207049. The reversal of 2516271206989 is 9896021726152.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2413828322500 + 102442884489 = 1553650^2 + 320067^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2516271206989 is a prime.

It is a super-2 number, since 2×2516271206989² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2516271206959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1258135603494 + 1258135603495.

It is an arithmetic number, because the mean of its divisors is an integer number (1258135603495).

Almost surely, 2^{2516271206989} is an apocalyptic number.

It is an amenable number.

2516271206989 is a deficient number, since it is larger than the sum of its proper divisors (1).

2516271206989 is an equidigital number, since it uses as much as digits as its factorization.

2516271206989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6531840, while the sum is 58.

The spelling of 2516271206989 in words is "two trillion, five hundred sixteen billion, two hundred seventy-one million, two hundred six thousand, nine hundred eighty-nine".