10405140521 has 8 divisors (see below), whose sum is σ = 10774918080. Its totient is φ = 10036094992.

The previous prime is 10405140511. The next prime is 10405140527. The reversal of 10405140521 is 12504150401.

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

It is a cyclic number.

It is not a de Polignac number, because 10405140521 - 2¹⁰ = 10405139497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10405140527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153995 + ... + 211008.

It is an arithmetic number, because the mean of its divisors is an integer number (1346864760).

Almost surely, 2^10405140521 is an apocalyptic number.

It is an amenable number.

10405140521 is a deficient number, since it is larger than the sum of its proper divisors (369777559).

10405140521 is an equidigital number, since it uses as much as digits as its factorization.

10405140521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366015.

The product of its (nonzero) digits is 800, while the sum is 23.

Adding to 10405140521 its reverse (12504150401), we get a palindrome (22909290922).

The spelling of 10405140521 in words is "ten billion, four hundred five million, one hundred forty thousand, five hundred twenty-one".