1378682877441 has 4 divisors (see below), whose sum is σ = 1838243836592. Its totient is φ = 919121918292.

The previous prime is 1378682877437. The next prime is 1378682877461. The reversal of 1378682877441 is 1447782868731.

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 not a de Polignac number, because 1378682877441 - 2² = 1378682877437 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1378682877401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 229780479571 + ... + 229780479576.

It is an arithmetic number, because the mean of its divisors is an integer number (459560959148).

Almost surely, 2^{1378682877441} is an apocalyptic number.

It is an amenable number.

1378682877441 is a deficient number, since it is larger than the sum of its proper divisors (459560959151).

1378682877441 is an equidigital number, since it uses as much as digits as its factorization.

1378682877441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459560959150.

The product of its digits is 101154816, while the sum is 66.

The spelling of 1378682877441 in words is "one trillion, three hundred seventy-eight billion, six hundred eighty-two million, eight hundred seventy-seven thousand, four hundred forty-one".