215787346711 has 2 divisors, whose sum is σ = 215787346712. Its totient is φ = 215787346710.

The previous prime is 215787346667. The next prime is 215787346741. The reversal of 215787346711 is 117643787512.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 215787346711 - 2¹⁷ = 215787215639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (215787346741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107893673355 + 107893673356.

It is an arithmetic number, because the mean of its divisors is an integer number (107893673356).

Almost surely, 2^215787346711 is an apocalyptic number.

215787346711 is a deficient number, since it is larger than the sum of its proper divisors (1).

215787346711 is an equidigital number, since it uses as much as digits as its factorization.

215787346711 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1975680, while the sum is 52.

The spelling of 215787346711 in words is "two hundred fifteen billion, seven hundred eighty-seven million, three hundred forty-six thousand, seven hundred eleven".