2115573342887 has 2 divisors, whose sum is σ = 2115573342888. Its totient is φ = 2115573342886.

The previous prime is 2115573342833. The next prime is 2115573342913. The reversal of 2115573342887 is 7882433755112.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2115573342887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2115573342587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1057786671443 + 1057786671444.

It is an arithmetic number, because the mean of its divisors is an integer number (1057786671444).

Almost surely, 2^{2115573342887} is an apocalyptic number.

2115573342887 is a deficient number, since it is larger than the sum of its proper divisors (1).

2115573342887 is an equidigital number, since it uses as much as digits as its factorization.

2115573342887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11289600, while the sum is 56.

The spelling of 2115573342887 in words is "two trillion, one hundred fifteen billion, five hundred seventy-three million, three hundred forty-two thousand, eight hundred eighty-seven".