134488643538 has 16 divisors (see below), whose sum is σ = 275537709216. Its totient is φ = 43736144160.

The previous prime is 134488643533. The next prime is 134488643591. The reversal of 134488643538 is 835346884431.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (134488643533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 273350656 + ... + 273351147.

It is an arithmetic number, because the mean of its divisors is an integer number (17221106826).

Almost surely, 2^134488643538 is an apocalyptic number.

134488643538 is an abundant number, since it is smaller than the sum of its proper divisors (141049065678).

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

134488643538 is a wasteful number, since it uses less digits than its factorization.

134488643538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546701849.

The product of its digits is 26542080, while the sum is 57.

The spelling of 134488643538 in words is "one hundred thirty-four billion, four hundred eighty-eight million, six hundred forty-three thousand, five hundred thirty-eight".