140576812909 has 6 divisors (see below), whose sum is σ = 152222229546. Its totient is φ = 129763211760.

The previous prime is 140576812897. The next prime is 140576812963. The reversal of 140576812909 is 909218675041.

It can be written as a sum of positive squares in 3 ways, for example, as 4183243684 + 136393569225 = 64678^2 + 369315^2 .

It is not a de Polignac number, because 140576812909 - 2⁷ = 140576812781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140576812969) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 415907562 + ... + 415907899.

It is an arithmetic number, because the mean of its divisors is an integer number (25370371591).

Almost surely, 2^140576812909 is an apocalyptic number.

It is an amenable number.

140576812909 is a deficient number, since it is larger than the sum of its proper divisors (11645416637).

140576812909 is an equidigital number, since it uses as much as digits as its factorization.

140576812909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 831815487 (or 831815474 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 52.

The spelling of 140576812909 in words is "one hundred forty billion, five hundred seventy-six million, eight hundred twelve thousand, nine hundred nine".