1478308877240 has 256 divisors, whose sum is σ = 3816234777600. Its totient is φ = 510561460224.

The previous prime is 1478308877237. The next prime is 1478308877263. The reversal of 1478308877240 is 427788038741.

It is a self number, because there is not a number n which added to its sum of digits gives 1478308877240.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1608605501 + ... + 1608606419.

It is an arithmetic number, because the mean of its divisors is an integer number (14907167100).

Almost surely, 2^{1478308877240} is an apocalyptic number.

1478308877240 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 1478308877240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1908117388800).

1478308877240 is an abundant number, since it is smaller than the sum of its proper divisors (2337925900360).

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

1478308877240 is a wasteful number, since it uses less digits than its factorization.

1478308877240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1886 (or 1882 counting only the distinct ones).

The product of its (nonzero) digits is 16859136, while the sum is 59.

The spelling of 1478308877240 in words is "one trillion, four hundred seventy-eight billion, three hundred eight million, eight hundred seventy-seven thousand, two hundred forty".