111520035491 has 2 divisors, whose sum is σ = 111520035492. Its totient is φ = 111520035490.

The previous prime is 111520035463. The next prime is 111520035503. The reversal of 111520035491 is 194530025111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111520035491 - 2¹⁰ = 111520034467 is a prime.

It is a super-2 number, since 2×111520035491² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (111520035401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55760017745 + 55760017746.

It is an arithmetic number, because the mean of its divisors is an integer number (55760017746).

Almost surely, 2^111520035491 is an apocalyptic number.

111520035491 is a deficient number, since it is larger than the sum of its proper divisors (1).

111520035491 is an equidigital number, since it uses as much as digits as its factorization.

111520035491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5400, while the sum is 32.

The spelling of 111520035491 in words is "one hundred eleven billion, five hundred twenty million, thirty-five thousand, four hundred ninety-one".