1478474287920 has 640 divisors, whose sum is σ = 6249251450880. Its totient is φ = 313574768640.

The previous prime is 1478474287907. The next prime is 1478474287957. The reversal of 1478474287920 is 297824748741.

1478474287920 is a `hidden beast` number, since 1 + 4 + 78 + 474 + 2 + 8 + 7 + 92 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 18209334 + ... + 18290346.

It is an arithmetic number, because the mean of its divisors is an integer number (9764455392).

Almost surely, 2^{1478474287920} is an apocalyptic number.

1478474287920 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 1478474287920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3124625725440).

1478474287920 is an abundant number, since it is smaller than the sum of its proper divisors (4770777162960).

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

1478474287920 is a wasteful number, since it uses less digits than its factorization.

1478474287920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81130 (or 81118 counting only the distinct ones).

The product of its (nonzero) digits is 50577408, while the sum is 63.

The spelling of 1478474287920 in words is "one trillion, four hundred seventy-eight billion, four hundred seventy-four million, two hundred eighty-seven thousand, nine hundred twenty".