1477443421440 has 864 divisors, whose sum is σ = 6174718945920. Its totient is φ = 337670000640.

The previous prime is 1477443421429. The next prime is 1477443421453. The reversal of 1477443421440 is 441243447741.

1477443421440 is a `hidden beast` number, since 1 + 4 + 7 + 74 + 434 + 2 + 144 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (864).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 137163255 + ... + 137174025.

Almost surely, 2^{1477443421440} is an apocalyptic number.

1477443421440 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 1477443421440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3087359472960).

1477443421440 is an abundant number, since it is smaller than the sum of its proper divisors (4697275524480).

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

1477443421440 is an frugal number, since it uses more digits than its factorization.

1477443421440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10827 (or 10788 counting only the distinct ones).

The product of its (nonzero) digits is 1204224, while the sum is 45.

The spelling of 1477443421440 in words is "one trillion, four hundred seventy-seven billion, four hundred forty-three million, four hundred twenty-one thousand, four hundred forty".