10405416721 has 8 divisors (see below), whose sum is σ = 11900615040. Its totient is φ = 8912395968.

The previous prime is 10405416719. The next prime is 10405416733. The reversal of 10405416721 is 12761450401.

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

It is not a de Polignac number, because 10405416721 - 2¹ = 10405416719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10405416781) 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, 534136 + ... + 553273.

It is an arithmetic number, because the mean of its divisors is an integer number (1487576880).

Almost surely, 2^10405416721 is an apocalyptic number.

It is an amenable number.

10405416721 is a deficient number, since it is larger than the sum of its proper divisors (1495198319).

10405416721 is a wasteful number, since it uses less digits than its factorization.

10405416721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1088783.

The product of its (nonzero) digits is 6720, while the sum is 31.

The spelling of 10405416721 in words is "ten billion, four hundred five million, four hundred sixteen thousand, seven hundred twenty-one".