2191180706527 has 2 divisors, whose sum is σ = 2191180706528. Its totient is φ = 2191180706526.

The previous prime is 2191180706471. The next prime is 2191180706551. The reversal of 2191180706527 is 7256070811912.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2191180706527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2191180709527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1095590353263 + 1095590353264.

It is an arithmetic number, because the mean of its divisors is an integer number (1095590353264).

Almost surely, 2^{2191180706527} is an apocalyptic number.

2191180706527 is a deficient number, since it is larger than the sum of its proper divisors (1).

2191180706527 is an equidigital number, since it uses as much as digits as its factorization.

2191180706527 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 423360, while the sum is 49.

The spelling of 2191180706527 in words is "two trillion, one hundred ninety-one billion, one hundred eighty million, seven hundred six thousand, five hundred twenty-seven".