116781547 has 2 divisors, whose sum is σ = 116781548. Its totient is φ = 116781546.

The previous prime is 116781541. The next prime is 116781589. The reversal of 116781547 is 745187611.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 116781547 - 2¹¹ = 116779499 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (116781541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58390773 + 58390774.

It is an arithmetic number, because the mean of its divisors is an integer number (58390774).

Almost surely, 2^116781547 is an apocalyptic number.

116781547 is a deficient number, since it is larger than the sum of its proper divisors (1).

116781547 is an equidigital number, since it uses as much as digits as its factorization.

116781547 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47040, while the sum is 40.

The square root of 116781547 is about 10806.5511149487. The cubic root of 116781547 is about 488.7927339265.

It can be divided in two parts, 11678 and 1547, that added together give a square (13225 = 115²).

The spelling of 116781547 in words is "one hundred sixteen million, seven hundred eighty-one thousand, five hundred forty-seven".