1378331754536 has 16 divisors (see below), whose sum is σ = 2819314952640. Its totient is φ = 626514433840.

The previous prime is 1378331754529. The next prime is 1378331754577. The reversal of 1378331754536 is 6354571338731.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7831430336 + ... + 7831430511.

It is an arithmetic number, because the mean of its divisors is an integer number (176207184540).

Almost surely, 2^{1378331754536} is an apocalyptic number.

It is an amenable number.

1378331754536 is an abundant number, since it is smaller than the sum of its proper divisors (1440983198104).

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

1378331754536 is a wasteful number, since it uses less digits than its factorization.

1378331754536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15662860864 (or 15662860860 counting only the distinct ones).

The product of its digits is 19051200, while the sum is 56.

The spelling of 1378331754536 in words is "one trillion, three hundred seventy-eight billion, three hundred thirty-one million, seven hundred fifty-four thousand, five hundred thirty-six".