1378625856001 has 4 divisors (see below), whose sum is σ = 1451185111600. Its totient is φ = 1306066600404.

The previous prime is 1378625855977. The next prime is 1378625856043. The reversal of 1378625856001 is 1006585268731.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1378625856001 - 2⁹ = 1378625855489 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1378625856001.

It is not an unprimeable number, because it can be changed into a prime (1378625856301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36279627771 + ... + 36279627808.

It is an arithmetic number, because the mean of its divisors is an integer number (362796277900).

Almost surely, 2^{1378625856001} is an apocalyptic number.

It is an amenable number.

1378625856001 is a deficient number, since it is larger than the sum of its proper divisors (72559255599).

1378625856001 is an equidigital number, since it uses as much as digits as its factorization.

1378625856001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72559255598.

The product of its (nonzero) digits is 2419200, while the sum is 52.

The spelling of 1378625856001 in words is "one trillion, three hundred seventy-eight billion, six hundred twenty-five million, eight hundred fifty-six thousand, one".