1387887787888 has 80 divisors (see below), whose sum is σ = 3090897330624. Its totient is φ = 591389245440.

The previous prime is 1387887787883. The next prime is 1387887787889. The reversal of 1387887787888 is 8887877887831.

It is a junction number, because it is equal to n+sod(n) for n = 1387887787799 and 1387887787808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1387887787883) 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, 14334456 + ... + 14430952.

Almost surely, 2^{1387887787888} is an apocalyptic number.

It is an amenable number.

1387887787888 is an abundant number, since it is smaller than the sum of its proper divisors (1703009542736).

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

1387887787888 is a wasteful number, since it uses less digits than its factorization.

1387887787888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97250 (or 97244 counting only the distinct ones).

The product of its digits is 15105785856, while the sum is 88.

The spelling of 1387887787888 in words is "one trillion, three hundred eighty-seven billion, eight hundred eighty-seven million, seven hundred eighty-seven thousand, eight hundred eighty-eight".