11897120377 has 2 divisors, whose sum is σ = 11897120378. Its totient is φ = 11897120376.

The previous prime is 11897120359. The next prime is 11897120381. The reversal of 11897120377 is 77302179811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9882546921 + 2014573456 = 99411^2 + 44884^2 .

It is a cyclic number.

It is not a de Polignac number, because 11897120377 - 2²³ = 11888731769 is a prime.

It is not a weakly prime, because it can be changed into another prime (11897123377) 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 as a sum of consecutive naturals, namely, 5948560188 + 5948560189.

It is an arithmetic number, because the mean of its divisors is an integer number (5948560189).

Almost surely, 2^11897120377 is an apocalyptic number.

It is an amenable number.

11897120377 is a deficient number, since it is larger than the sum of its proper divisors (1).

11897120377 is an equidigital number, since it uses as much as digits as its factorization.

11897120377 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 148176, while the sum is 46.

The spelling of 11897120377 in words is "eleven billion, eight hundred ninety-seven million, one hundred twenty thousand, three hundred seventy-seven".