42664581163641 has 16 divisors (see below), whose sum is σ = 57857676318720. Its totient is φ = 27957393338640.

The previous prime is 42664581163639. The next prime is 42664581163663. The reversal of 42664581163641 is 14636118546624.

It is not a de Polignac number, because 42664581163641 - 2¹ = 42664581163639 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42664581163601) 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, 14021365 + ... + 16790706.

It is an arithmetic number, because the mean of its divisors is an integer number (3616104769920).

Almost surely, 2^{42664581163641} is an apocalyptic number.

It is an amenable number.

42664581163641 is a deficient number, since it is larger than the sum of its proper divisors (15193095155079).

42664581163641 is a wasteful number, since it uses less digits than its factorization.

42664581163641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30819956.

The product of its digits is 19906560, while the sum is 57.

The spelling of 42664581163641 in words is "forty-two trillion, six hundred sixty-four billion, five hundred eighty-one million, one hundred sixty-three thousand, six hundred forty-one".