87694781711 has 2 divisors, whose sum is σ = 87694781712. Its totient is φ = 87694781710.

The previous prime is 87694781663. The next prime is 87694781717. The reversal of 87694781711 is 11718749678.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87694781711 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87694781717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43847390855 + 43847390856.

It is an arithmetic number, because the mean of its divisors is an integer number (43847390856).

Almost surely, 2^87694781711 is an apocalyptic number.

87694781711 is a deficient number, since it is larger than the sum of its proper divisors (1).

87694781711 is an equidigital number, since it uses as much as digits as its factorization.

87694781711 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4741632, while the sum is 59.

The spelling of 87694781711 in words is "eighty-seven billion, six hundred ninety-four million, seven hundred eighty-one thousand, seven hundred eleven".