381121117087 has 2 divisors, whose sum is σ = 381121117088. Its totient is φ = 381121117086.

The previous prime is 381121117079. The next prime is 381121117103. The reversal of 381121117087 is 780711121183.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 381121117087 - 2³ = 381121117079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (381121117067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190560558543 + 190560558544.

It is an arithmetic number, because the mean of its divisors is an integer number (190560558544).

Almost surely, 2^381121117087 is an apocalyptic number.

381121117087 is a deficient number, since it is larger than the sum of its proper divisors (1).

381121117087 is an equidigital number, since it uses as much as digits as its factorization.

381121117087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18816, while the sum is 40.

The spelling of 381121117087 in words is "three hundred eighty-one billion, one hundred twenty-one million, one hundred seventeen thousand, eighty-seven".