140797782817 has 2 divisors, whose sum is σ = 140797782818. Its totient is φ = 140797782816.

The previous prime is 140797782739. The next prime is 140797782893. The reversal of 140797782817 is 718287797041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 105302846016 + 35494936801 = 324504^2 + 188401^2 .

It is an emirp because it is prime and its reverse (718287797041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140797782817 - 2²³ = 140789394209 is a prime.

It is not a weakly prime, because it can be changed into another prime (140797783817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70398891408 + 70398891409.

It is an arithmetic number, because the mean of its divisors is an integer number (70398891409).

Almost surely, 2^140797782817 is an apocalyptic number.

It is an amenable number.

140797782817 is a deficient number, since it is larger than the sum of its proper divisors (1).

140797782817 is an equidigital number, since it uses as much as digits as its factorization.

140797782817 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11063808, while the sum is 61.

The spelling of 140797782817 in words is "one hundred forty billion, seven hundred ninety-seven million, seven hundred eighty-two thousand, eight hundred seventeen".