1197959988417 has 4 divisors (see below), whose sum is σ = 1597279984560. Its totient is φ = 798639992276.

The previous prime is 1197959988389. The next prime is 1197959988419. The reversal of 1197959988417 is 7148899597911.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1197959988417 - 2⁷ = 1197959988289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1197959988419) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 199659998067 + ... + 199659998072.

It is an arithmetic number, because the mean of its divisors is an integer number (399319996140).

Almost surely, 2^{1197959988417} is an apocalyptic number.

It is an amenable number.

1197959988417 is a deficient number, since it is larger than the sum of its proper divisors (399319996143).

1197959988417 is an equidigital number, since it uses as much as digits as its factorization.

1197959988417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399319996142.

The product of its digits is 411505920, while the sum is 78.

The spelling of 1197959988417 in words is "one trillion, one hundred ninety-seven billion, nine hundred fifty-nine million, nine hundred eighty-eight thousand, four hundred seventeen".