1378848565850 has 144 divisors (see below), whose sum is σ = 3191886465120. Its totient is φ = 440523619200.

The previous prime is 1378848565817. The next prime is 1378848565879. The reversal of 1378848565850 is 585658488731.

It is a hoax number, since the sum of its digits (68) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2596757 + ... + 3082343.

It is an arithmetic number, because the mean of its divisors is an integer number (22165878230).

Almost surely, 2^{1378848565850} is an apocalyptic number.

1378848565850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1378848565850 is an abundant number, since it is smaller than the sum of its proper divisors (1813037899270).

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

1378848565850 is a wasteful number, since it uses less digits than its factorization.

1378848565850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485693 (or 485681 counting only the distinct ones).

The product of its (nonzero) digits is 258048000, while the sum is 68.

The spelling of 1378848565850 in words is "one trillion, three hundred seventy-eight billion, eight hundred forty-eight million, five hundred sixty-five thousand, eight hundred fifty".