140565381097 has 2 divisors, whose sum is σ = 140565381098. Its totient is φ = 140565381096.

The previous prime is 140565381091. The next prime is 140565381119. The reversal of 140565381097 is 790183565041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 95809439961 + 44755941136 = 309531^2 + 211556^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140565381097 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 140565381097.

It is not a weakly prime, because it can be changed into another prime (140565381091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70282690548 + 70282690549.

It is an arithmetic number, because the mean of its divisors is an integer number (70282690549).

Almost surely, 2^140565381097 is an apocalyptic number.

It is an amenable number.

140565381097 is a deficient number, since it is larger than the sum of its proper divisors (1).

140565381097 is an equidigital number, since it uses as much as digits as its factorization.

140565381097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 907200, while the sum is 49.

The spelling of 140565381097 in words is "one hundred forty billion, five hundred sixty-five million, three hundred eighty-one thousand, ninety-seven".