140743479809 has 2 divisors, whose sum is σ = 140743479810. Its totient is φ = 140743479808.

The previous prime is 140743479797. The next prime is 140743479823. The reversal of 140743479809 is 908974347041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 95394499600 + 45348980209 = 308860^2 + 212953^2 .

It is an emirp because it is prime and its reverse (908974347041) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140743479809 is a prime.

It is not a weakly prime, because it can be changed into another prime (140743470809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70371739904 + 70371739905.

It is an arithmetic number, because the mean of its divisors is an integer number (70371739905).

Almost surely, 2^140743479809 is an apocalyptic number.

It is an amenable number.

140743479809 is a deficient number, since it is larger than the sum of its proper divisors (1).

140743479809 is an equidigital number, since it uses as much as digits as its factorization.

140743479809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6096384, while the sum is 56.

The spelling of 140743479809 in words is "one hundred forty billion, seven hundred forty-three million, four hundred seventy-nine thousand, eight hundred nine".