1388888888745 has 16 divisors (see below), whose sum is σ = 2232754085952. Its totient is φ = 737230119360.

The previous prime is 1388888888741. The next prime is 1388888888747. The reversal of 1388888888745 is 5478888888831.

It is not a de Polignac number, because 1388888888745 - 2² = 1388888888741 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1388888888741) 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, 219410562 + ... + 219416891.

It is an arithmetic number, because the mean of its divisors is an integer number (139547130372).

Almost surely, 2^{1388888888745} is an apocalyptic number.

1388888888745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1388888888745 is a deficient number, since it is larger than the sum of its proper divisors (843865197207).

1388888888745 is a wasteful number, since it uses less digits than its factorization.

1388888888745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438827672.

The product of its digits is 7046430720, while the sum is 84.

The spelling of 1388888888745 in words is "one trillion, three hundred eighty-eight billion, eight hundred eighty-eight million, eight hundred eighty-eight thousand, seven hundred forty-five".