7897753618444 has 24 divisors (see below), whose sum is σ = 14549534720000. Its totient is φ = 3740773447440.

The previous prime is 7897753618441. The next prime is 7897753618511. The reversal of 7897753618444 is 4448163577987.

It is a super-2 number, since 2×7897753618444² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7897753618441) 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, 2647692 + ... + 4775539.

Almost surely, 2^{7897753618444} is an apocalyptic number.

It is an amenable number.

7897753618444 is a deficient number, since it is larger than the sum of its proper divisors (6651781101556).

7897753618444 is a wasteful number, since it uses less digits than its factorization.

7897753618444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7437253 (or 7437251 counting only the distinct ones).

The product of its digits is 1137991680, while the sum is 73.

The spelling of 7897753618444 in words is "seven trillion, eight hundred ninety-seven billion, seven hundred fifty-three million, six hundred eighteen thousand, four hundred forty-four".