1387370808684 has 72 divisors (see below), whose sum is σ = 4056248851200. Its totient is φ = 391615850592.

The previous prime is 1387370808667. The next prime is 1387370808727. The reversal of 1387370808684 is 4868080737831.

1387370808684 is a `hidden beast` number, since 1 + 38 + 7 + 370 + 80 + 86 + 84 = 666.

It is a super-2 number, since 2×1387370808684² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33144384 + ... + 33186215.

It is an arithmetic number, because the mean of its divisors is an integer number (56336789600).

Almost surely, 2^{1387370808684} is an apocalyptic number.

1387370808684 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1387370808684 is an abundant number, since it is smaller than the sum of its proper divisors (2668878042516).

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

1387370808684 is a wasteful number, since it uses less digits than its factorization.

1387370808684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66330699 (or 66330694 counting only the distinct ones).

The product of its (nonzero) digits is 43352064, while the sum is 63.

The spelling of 1387370808684 in words is "one trillion, three hundred eighty-seven billion, three hundred seventy million, eight hundred eight thousand, six hundred eighty-four".