109991510086511 has 2 divisors, whose sum is σ = 109991510086512. Its totient is φ = 109991510086510.

The previous prime is 109991510086429. The next prime is 109991510086519. The reversal of 109991510086511 is 115680015199901.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-109991510086511 is a prime.

It is a super-2 number, since 2×109991510086511² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109991510086519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54995755043255 + 54995755043256.

It is an arithmetic number, because the mean of its divisors is an integer number (54995755043256).

Almost surely, 2^{109991510086511} is an apocalyptic number.

109991510086511 is a deficient number, since it is larger than the sum of its proper divisors (1).

109991510086511 is an equidigital number, since it uses as much as digits as its factorization.

109991510086511 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 874800, while the sum is 56.

The spelling of 109991510086511 in words is "one hundred nine trillion, nine hundred ninety-one billion, five hundred ten million, eighty-six thousand, five hundred eleven".