12001956697 has 2 divisors, whose sum is σ = 12001956698.
Its totient is φ = 12001956696.
The previous prime is 12001956677. The next prime is 12001956709. The reversal of 12001956697 is 79665910021.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 11991126016 + 10830681 = 109504^2 + 3291^2
It is a cyclic number.
It is not a de Polignac number, because 12001956697 - 219 = 12001432409 is a prime.
It is not a weakly prime, because it can be changed into another prime (12001956677) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6000978348 + 6000978349.
It is an arithmetic number, because the mean of its divisors is an integer number (6000978349).
Almost surely, 212001956697 is an apocalyptic number.
It is an amenable number.
12001956697 is a deficient number, since it is larger than the sum of its proper divisors (1).
12001956697 is an equidigital number, since it uses as much as digits as its factorization.
12001956697 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 204120, while the sum is 46.
The spelling of 12001956697 in words is "twelve billion, one million, nine hundred fifty-six thousand, six hundred ninety-seven".