1377398928450 has 48 divisors (see below), whose sum is σ = 3473846811360. Its totient is φ = 361080846720.

The previous prime is 1377398928439. The next prime is 1377398928457. The reversal of 1377398928450 is 548298937731.

It is not an unprimeable number, because it can be changed into a prime (1377398928457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 77810299 + ... + 77827998.

It is an arithmetic number, because the mean of its divisors is an integer number (72371808570).

Almost surely, 2^{1377398928450} is an apocalyptic number.

1377398928450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1377398928450 is an abundant number, since it is smaller than the sum of its proper divisors (2096447882910).

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

1377398928450 is a wasteful number, since it uses less digits than its factorization.

1377398928450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155638371 (or 155638366 counting only the distinct ones).

The product of its (nonzero) digits is 91445760, while the sum is 66.

The spelling of 1377398928450 in words is "one trillion, three hundred seventy-seven billion, three hundred ninety-eight million, nine hundred twenty-eight thousand, four hundred fifty".