1378886423040 has 640 divisors, whose sum is σ = 5616460523520. Its totient is φ = 314113572864.

The previous prime is 1378886423009. The next prime is 1378886423041. The reversal of 1378886423040 is 403246888731.

1378886423040 is a `hidden beast` number, since 137 + 8 + 8 + 86 + 423 + 0 + 4 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (640).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (1378886423041) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 148534239 + ... + 148543521.

It is an arithmetic number, because the mean of its divisors is an integer number (8775719568).

Almost surely, 2^{1378886423040} is an apocalyptic number.

1378886423040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1378886423040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2808230261760).

1378886423040 is an abundant number, since it is smaller than the sum of its proper divisors (4237574100480).

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

1378886423040 is an equidigital number, since it uses as much as digits as its factorization.

1378886423040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9629 (or 9607 counting only the distinct ones).

The product of its (nonzero) digits is 6193152, while the sum is 54.

The spelling of 1378886423040 in words is "one trillion, three hundred seventy-eight billion, eight hundred eighty-six million, four hundred twenty-three thousand, forty".