1378540448652 has 96 divisors (see below), whose sum is σ = 3312815708160. Its totient is φ = 445893038080.

The previous prime is 1378540448641. The next prime is 1378540448669. The reversal of 1378540448652 is 2568440458731.

It is a junction number, because it is equal to n+sod(n) for n = 1378540448592 and 1378540448601.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 104293948 + ... + 104307164.

It is an arithmetic number, because the mean of its divisors is an integer number (34508496960).

Almost surely, 2^{1378540448652} is an apocalyptic number.

1378540448652 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1378540448652 is an abundant number, since it is smaller than the sum of its proper divisors (1934275259508).

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

1378540448652 is a wasteful number, since it uses less digits than its factorization.

1378540448652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14391 (or 14389 counting only the distinct ones).

The product of its (nonzero) digits is 25804800, while the sum is 57.

The spelling of 1378540448652 in words is "one trillion, three hundred seventy-eight billion, five hundred forty million, four hundred forty-eight thousand, six hundred fifty-two".