1156353964991 has 2 divisors, whose sum is σ = 1156353964992. Its totient is φ = 1156353964990.

The previous prime is 1156353964979. The next prime is 1156353965047. The reversal of 1156353964991 is 1994693536511.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1156353964991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1156353964091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 578176982495 + 578176982496.

It is an arithmetic number, because the mean of its divisors is an integer number (578176982496).

Almost surely, 2^{1156353964991} is an apocalyptic number.

1156353964991 is a deficient number, since it is larger than the sum of its proper divisors (1).

1156353964991 is an equidigital number, since it uses as much as digits as its factorization.

1156353964991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23619600, while the sum is 62.

The spelling of 1156353964991 in words is "one trillion, one hundred fifty-six billion, three hundred fifty-three million, nine hundred sixty-four thousand, nine hundred ninety-one".