538639540488 has 384 divisors, whose sum is σ = 1839675801600. Its totient is φ = 138978892800.

The previous prime is 538639540487. The next prime is 538639540493. The reversal of 538639540488 is 884045936835.

It is a happy number.

538639540488 is a `hidden beast` number, since 5 + 3 + 8 + 6 + 3 + 9 + 540 + 4 + 88 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (538639540487) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 14715153 + ... + 14751711.

It is an arithmetic number, because the mean of its divisors is an integer number (4790822400).

Almost surely, 2^538639540488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 538639540488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (919837900800).

538639540488 is an abundant number, since it is smaller than the sum of its proper divisors (1301036261112).

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

538639540488 is a wasteful number, since it uses less digits than its factorization.

538639540488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36673 (or 36666 counting only the distinct ones).

The product of its (nonzero) digits is 99532800, while the sum is 63.

The spelling of 538639540488 in words is "five hundred thirty-eight billion, six hundred thirty-nine million, five hundred forty thousand, four hundred eighty-eight".