538359778944 has 320 divisors, whose sum is σ = 1754662140000. Its totient is φ = 162839144448.

The previous prime is 538359778919. The next prime is 538359778993. The reversal of 538359778944 is 449877953835.

538359778944 is a `hidden beast` number, since 5 + 383 + 5 + 97 + 78 + 94 + 4 = 666.

538359778944 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 7918407 + ... + 7986105.

Almost surely, 2^538359778944 is an apocalyptic number.

538359778944 is a gapful number since it is divisible by the number (54) 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 538359778944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (877331070000).

538359778944 is an abundant number, since it is smaller than the sum of its proper divisors (1216302361056).

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

538359778944 is a wasteful number, since it uses less digits than its factorization.

538359778944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67797 (or 67776 counting only the distinct ones).

The product of its digits is 914457600, while the sum is 72.

The spelling of 538359778944 in words is "five hundred thirty-eight billion, three hundred fifty-nine million, seven hundred seventy-eight thousand, nine hundred forty-four".