138045404552 has 48 divisors (see below), whose sum is σ = 299478706800. Its totient is φ = 59445381600.

The previous prime is 138045404551. The next prime is 138045404561. The reversal of 138045404552 is 255404540831.

It is a super-3 number, since 3×138045404552³ (a number of 34 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (138045404551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3734474 + ... + 3771257.

It is an arithmetic number, because the mean of its divisors is an integer number (6239139725).

Almost surely, 2^138045404552 is an apocalyptic number.

It is an amenable number.

138045404552 is an abundant number, since it is smaller than the sum of its proper divisors (161433302248).

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

138045404552 is a wasteful number, since it uses less digits than its factorization.

138045404552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7505778 (or 7505763 counting only the distinct ones).

The product of its (nonzero) digits is 384000, while the sum is 41.

The spelling of 138045404552 in words is "one hundred thirty-eight billion, forty-five million, four hundred four thousand, five hundred fifty-two".