10646405406321 has 16 divisors (see below), whose sum is σ = 14200084340736. Its totient is φ = 7095165307776.

The previous prime is 10646405406313. The next prime is 10646405406341. The reversal of 10646405406321 is 12360450464601.

It is not a de Polignac number, because 10646405406321 - 2³ = 10646405406313 is a prime.

It is a super-2 number, since 2×10646405406321² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10646405406341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 285614541 + ... + 285651813.

It is an arithmetic number, because the mean of its divisors is an integer number (887505271296).

Almost surely, 2^{10646405406321} is an apocalyptic number.

It is an amenable number.

10646405406321 is a deficient number, since it is larger than the sum of its proper divisors (3553678934415).

10646405406321 is a wasteful number, since it uses less digits than its factorization.

10646405406321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67432.

The product of its (nonzero) digits is 414720, while the sum is 42.

The spelling of 10646405406321 in words is "ten trillion, six hundred forty-six billion, four hundred five million, four hundred six thousand, three hundred twenty-one".