11897904413 has 2 divisors, whose sum is σ = 11897904414. Its totient is φ = 11897904412.

The previous prime is 11897904407. The next prime is 11897904433. The reversal of 11897904413 is 31440979811.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11789182084 + 108722329 = 108578^2 + 10427^2 .

It is a cyclic number.

It is not a de Polignac number, because 11897904413 - 2⁴ = 11897904397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11897904433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5948952206 + 5948952207.

It is an arithmetic number, because the mean of its divisors is an integer number (5948952207).

Almost surely, 2^11897904413 is an apocalyptic number.

It is an amenable number.

11897904413 is a deficient number, since it is larger than the sum of its proper divisors (1).

11897904413 is an equidigital number, since it uses as much as digits as its factorization.

11897904413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 47.

The spelling of 11897904413 in words is "eleven billion, eight hundred ninety-seven million, nine hundred four thousand, four hundred thirteen".