1397196912641 has 4 divisors (see below), whose sum is σ = 1399553063172. Its totient is φ = 1394840762112.

The previous prime is 1397196912623. The next prime is 1397196912649. The reversal of 1397196912641 is 1462196917931.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 411912374416 + 985284538225 = 641804^2 + 992615^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1397196912641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1397196912649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1178074376 + ... + 1178075561.

It is an arithmetic number, because the mean of its divisors is an integer number (349888265793).

Almost surely, 2^{1397196912641} is an apocalyptic number.

It is an amenable number.

1397196912641 is a deficient number, since it is larger than the sum of its proper divisors (2356150531).

1397196912641 is an equidigital number, since it uses as much as digits as its factorization.

1397196912641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2356150530.

The product of its digits is 4408992, while the sum is 59.

The spelling of 1397196912641 in words is "one trillion, three hundred ninety-seven billion, one hundred ninety-six million, nine hundred twelve thousand, six hundred forty-one".