116781641 has 2 divisors, whose sum is σ = 116781642. Its totient is φ = 116781640.

The previous prime is 116781589. The next prime is 116781647. The reversal of 116781641 is 146187611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116726416 + 55225 = 10804^2 + 235^2 .

It is a cyclic number.

It is not a de Polignac number, because 116781641 - 2¹⁰ = 116780617 is a prime.

It is a super-3 number, since 3×116781641³ (a number of 25 digits) contains 333 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (116781647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58390820 + 58390821.

It is an arithmetic number, because the mean of its divisors is an integer number (58390821).

Almost surely, 2^116781641 is an apocalyptic number.

It is an amenable number.

116781641 is a deficient number, since it is larger than the sum of its proper divisors (1).

116781641 is an equidigital number, since it uses as much as digits as its factorization.

116781641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8064, while the sum is 35.

The square root of 116781641 is about 10806.5554641616. Note that the first 3 decimals coincide. The cubic root of 116781641 is about 488.7928650731.

The spelling of 116781641 in words is "one hundred sixteen million, seven hundred eighty-one thousand, six hundred forty-one".