140606460521 has 8 divisors (see below), whose sum is σ = 140795807688. Its totient is φ = 140417200000.

The previous prime is 140606460439. The next prime is 140606460559. The reversal of 140606460521 is 125064606041.

It can be written as a sum of positive squares in 4 ways, for example, as 52789657600 + 87816802921 = 229760^2 + 296339^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140606460521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140606460571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3632771 + ... + 3671271.

It is an arithmetic number, because the mean of its divisors is an integer number (17599475961).

Almost surely, 2^140606460521 is an apocalyptic number.

It is an amenable number.

140606460521 is a deficient number, since it is larger than the sum of its proper divisors (189347167).

140606460521 is an equidigital number, since it uses as much as digits as its factorization.

140606460521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43323.

The product of its (nonzero) digits is 34560, while the sum is 35.

The spelling of 140606460521 in words is "one hundred forty billion, six hundred six million, four hundred sixty thousand, five hundred twenty-one".