7743545681388 has 96 divisors (see below), whose sum is σ = 19747386919680. Its totient is φ = 2342180448000.

The previous prime is 7743545681381. The next prime is 7743545681411. The reversal of 7743545681388 is 8831865453477.

It is a Smith number, since the sum of its digits (69) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (7743545681381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 456003858 + ... + 456020838.

It is an arithmetic number, because the mean of its divisors is an integer number (205701947080).

Almost surely, 2^{7743545681388} is an apocalyptic number.

It is an amenable number.

7743545681388 is an abundant number, since it is smaller than the sum of its proper divisors (12003841238292).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7743545681388 is a wasteful number, since it uses less digits than its factorization.

7743545681388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23199 (or 23197 counting only the distinct ones).

The product of its digits is 541900800, while the sum is 69.

The spelling of 7743545681388 in words is "seven trillion, seven hundred forty-three billion, five hundred forty-five million, six hundred eighty-one thousand, three hundred eighty-eight".