11807690381 has 2 divisors, whose sum is σ = 11807690382. Its totient is φ = 11807690380.

The previous prime is 11807690329. The next prime is 11807690441. The reversal of 11807690381 is 18309670811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11786576356 + 21114025 = 108566^2 + 4595^2 .

It is a cyclic number.

It is not a de Polignac number, because 11807690381 - 2⁶ = 11807690317 is a prime.

It is a super-2 number, since 2×11807690381² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11807699381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5903845190 + 5903845191.

It is an arithmetic number, because the mean of its divisors is an integer number (5903845191).

Almost surely, 2^11807690381 is an apocalyptic number.

It is an amenable number.

11807690381 is a deficient number, since it is larger than the sum of its proper divisors (1).

11807690381 is an equidigital number, since it uses as much as digits as its factorization.

11807690381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 44.

The spelling of 11807690381 in words is "eleven billion, eight hundred seven million, six hundred ninety thousand, three hundred eighty-one".