1378240693987 has 8 divisors (see below), whose sum is σ = 1394880499152. Its totient is φ = 1361696246400.

The previous prime is 1378240693937. The next prime is 1378240694057. The reversal of 1378240693987 is 7893960428731.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1378240693987 - 2¹¹ = 1378240691939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1378240693927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23810314 + ... + 23868127.

It is an arithmetic number, because the mean of its divisors is an integer number (174360062394).

Almost surely, 2^{1378240693987} is an apocalyptic number.

1378240693987 is a deficient number, since it is larger than the sum of its proper divisors (16639805165).

1378240693987 is a wasteful number, since it uses less digits than its factorization.

1378240693987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47678789.

The product of its (nonzero) digits is 109734912, while the sum is 67.

The spelling of 1378240693987 in words is "one trillion, three hundred seventy-eight billion, two hundred forty million, six hundred ninety-three thousand, nine hundred eighty-seven".