969864523513 has 2 divisors, whose sum is σ = 969864523514. Its totient is φ = 969864523512.

The previous prime is 969864523477. The next prime is 969864523519. The reversal of 969864523513 is 315325468969.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 576850883049 + 393013640464 = 759507^2 + 626908^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-969864523513 is a prime.

It is a super-2 number, since 2×969864523513² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (969864523519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 484932261756 + 484932261757.

It is an arithmetic number, because the mean of its divisors is an integer number (484932261757).

Almost surely, 2^969864523513 is an apocalyptic number.

It is an amenable number.

969864523513 is a deficient number, since it is larger than the sum of its proper divisors (1).

969864523513 is an equidigital number, since it uses as much as digits as its factorization.

969864523513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41990400, while the sum is 61.

The spelling of 969864523513 in words is "nine hundred sixty-nine billion, eight hundred sixty-four million, five hundred twenty-three thousand, five hundred thirteen".