140261287009 has 4 divisors (see below), whose sum is σ = 140267673280. Its totient is φ = 140254900740.

The previous prime is 140261287007. The next prime is 140261287039. The reversal of 140261287009 is 900782162041.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 900782162041 = 6529 ⋅137966329.

It is a cyclic number.

It is not a de Polignac number, because 140261287009 - 2¹ = 140261287007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140261287007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3160077 + ... + 3204154.

It is an arithmetic number, because the mean of its divisors is an integer number (35066918320).

Almost surely, 2^140261287009 is an apocalyptic number.

It is an amenable number.

140261287009 is a deficient number, since it is larger than the sum of its proper divisors (6386271).

140261287009 is an equidigital number, since it uses as much as digits as its factorization.

140261287009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6386270.

The product of its (nonzero) digits is 48384, while the sum is 40.

The spelling of 140261287009 in words is "one hundred forty billion, two hundred sixty-one million, two hundred eighty-seven thousand, nine".