54638782487478 has 96 divisors (see below), whose sum is σ = 144059662656000. Its totient is φ = 14932338032304.

The previous prime is 54638782487473. The next prime is 54638782487503. The reversal of 54638782487478 is 87478428783645.

54638782487478 is a `hidden beast` number, since 5 + 4 + 6 + 38 + 78 + 2 + 48 + 7 + 478 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 54638782487397 and 54638782487406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54638782487473) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 192245368 + ... + 192529371.

It is an arithmetic number, because the mean of its divisors is an integer number (1500621486000).

Almost surely, 2^{54638782487478} is an apocalyptic number.

54638782487478 is an abundant number, since it is smaller than the sum of its proper divisors (89420880168522).

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

54638782487478 is a wasteful number, since it uses less digits than its factorization.

54638782487478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384774791 (or 384774774 counting only the distinct ones).

The product of its digits is 16184770560, while the sum is 81.

The spelling of 54638782487478 in words is "fifty-four trillion, six hundred thirty-eight billion, seven hundred eighty-two million, four hundred eighty-seven thousand, four hundred seventy-eight".