1151656643491 has 2 divisors, whose sum is σ = 1151656643492. Its totient is φ = 1151656643490.

The previous prime is 1151656643453. The next prime is 1151656643519. The reversal of 1151656643491 is 1943466561511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1151656643491 - 2¹⁵ = 1151656610723 is a prime.

It is not a weakly prime, because it can be changed into another prime (1151656643791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 575828321745 + 575828321746.

It is an arithmetic number, because the mean of its divisors is an integer number (575828321746).

Almost surely, 2^{1151656643491} is an apocalyptic number.

1151656643491 is a deficient number, since it is larger than the sum of its proper divisors (1).

1151656643491 is an equidigital number, since it uses as much as digits as its factorization.

1151656643491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2332800, while the sum is 52.

The spelling of 1151656643491 in words is "one trillion, one hundred fifty-one billion, six hundred fifty-six million, six hundred forty-three thousand, four hundred ninety-one".