478190901540 has 96 divisors (see below), whose sum is σ = 1500133106304. Its totient is φ = 112791951360.

The previous prime is 478190901523. The next prime is 478190901541. The reversal of 478190901540 is 45109091874.

It is a self number, because there is not a number n which added to its sum of digits gives 478190901540.

It is not an unprimeable number, because it can be changed into a prime (478190901541) 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 31 ways as a sum of consecutive naturals, for example, 9766549 + ... + 9815388.

It is an arithmetic number, because the mean of its divisors is an integer number (15626386524).

Almost surely, 2^478190901540 is an apocalyptic number.

It is an amenable number.

478190901540 is an abundant number, since it is smaller than the sum of its proper divisors (1021942204764).

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

478190901540 is a wasteful number, since it uses less digits than its factorization.

478190901540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19581997 (or 19581995 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 48.

The spelling of 478190901540 in words is "four hundred seventy-eight billion, one hundred ninety million, nine hundred one thousand, five hundred forty".