1646256116041 has 16 divisors (see below), whose sum is σ = 1775178127360. Its totient is φ = 1521964442880.

The previous prime is 1646256116039. The next prime is 1646256116053. The reversal of 1646256116041 is 1406116526461.

It is a cyclic number.

It is not a de Polignac number, because 1646256116041 - 2¹ = 1646256116039 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1646256116941) 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, 5444976 + ... + 5739361.

It is an arithmetic number, because the mean of its divisors is an integer number (110948632960).

Almost surely, 2^{1646256116041} is an apocalyptic number.

It is an amenable number.

1646256116041 is a deficient number, since it is larger than the sum of its proper divisors (128922011319).

1646256116041 is a wasteful number, since it uses less digits than its factorization.

1646256116041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11184544.

The product of its (nonzero) digits is 207360, while the sum is 43.

The spelling of 1646256116041 in words is "one trillion, six hundred forty-six billion, two hundred fifty-six million, one hundred sixteen thousand, forty-one".