140291819597 has 2 divisors, whose sum is σ = 140291819598. Its totient is φ = 140291819596.

The previous prime is 140291819587. The next prime is 140291819611. The reversal of 140291819597 is 795918192041.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 137556424996 + 2735394601 = 370886^2 + 52301^2 .

It is a cyclic number.

It is not a de Polignac number, because 140291819597 - 2⁴ = 140291819581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140291819537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70145909798 + 70145909799.

It is an arithmetic number, because the mean of its divisors is an integer number (70145909799).

Almost surely, 2^140291819597 is an apocalyptic number.

It is an amenable number.

140291819597 is a deficient number, since it is larger than the sum of its proper divisors (1).

140291819597 is an equidigital number, since it uses as much as digits as its factorization.

140291819597 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1632960, while the sum is 56.

The spelling of 140291819597 in words is "one hundred forty billion, two hundred ninety-one million, eight hundred nineteen thousand, five hundred ninety-seven".