4006644211072 has 64 divisors (see below), whose sum is σ = 8018545726800. Its totient is φ = 1994157195264.

The previous prime is 4006644211069. The next prime is 4006644211079. The reversal of 4006644211072 is 2701124466004.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4006644211079) 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, 48743704 + ... + 48825832.

Almost surely, 2^{4006644211072} is an apocalyptic number.

It is an amenable number.

4006644211072 is an abundant number, since it is smaller than the sum of its proper divisors (4011901515728).

4006644211072 is a wasteful number, since it uses less digits than its factorization.

4006644211072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83883 (or 83871 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 37.

Adding to 4006644211072 its reverse (2701124466004), we get a palindrome (6707768677076).

The spelling of 4006644211072 in words is "four trillion, six billion, six hundred forty-four million, two hundred eleven thousand, seventy-two".