12348961957 has 2 divisors, whose sum is σ = 12348961958. Its totient is φ = 12348961956.

The previous prime is 12348961943. The next prime is 12348961981. The reversal of 12348961957 is 75916984321.

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., 12284175556 + 64786401 = 110834^2 + 8049^2 .

It is an emirp because it is prime and its reverse (75916984321) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12348961957 is a prime.

It is a super-2 number, since 2×12348961957² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12348961898 and 12348961907.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12348961907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6174480978 + 6174480979.

It is an arithmetic number, because the mean of its divisors is an integer number (6174480979).

Almost surely, 2^12348961957 is an apocalyptic number.

It is an amenable number.

12348961957 is a deficient number, since it is larger than the sum of its proper divisors (1).

12348961957 is an equidigital number, since it uses as much as digits as its factorization.

12348961957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3265920, while the sum is 55.

The spelling of 12348961957 in words is "twelve billion, three hundred forty-eight million, nine hundred sixty-one thousand, nine hundred fifty-seven".