12001005953 has 2 divisors, whose sum is σ = 12001005954. Its totient is φ = 12001005952.

The previous prime is 12001005949. The next prime is 12001006093. The reversal of 12001005953 is 35950010021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11538411889 + 462594064 = 107417^2 + 21508^2 .

It is an emirp because it is prime and its reverse (35950010021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12001005953 - 2² = 12001005949 is a prime.

It is not a weakly prime, because it can be changed into another prime (12001005943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6000502976 + 6000502977.

It is an arithmetic number, because the mean of its divisors is an integer number (6000502977).

Almost surely, 2^12001005953 is an apocalyptic number.

It is an amenable number.

12001005953 is a deficient number, since it is larger than the sum of its proper divisors (1).

12001005953 is an equidigital number, since it uses as much as digits as its factorization.

12001005953 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1350, while the sum is 26.

Adding to 12001005953 its reverse (35950010021), we get a palindrome (47951015974).

The spelling of 12001005953 in words is "twelve billion, one million, five thousand, nine hundred fifty-three".