138259355557 has 24 divisors (see below), whose sum is σ = 143827980480. Its totient is φ = 132850206720.

The previous prime is 138259355551. The next prime is 138259355657. The reversal of 138259355557 is 755553952831.

It is not a de Polignac number, because 138259355557 - 2²³ = 138250966949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138259355551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44757069 + ... + 44760157.

It is an arithmetic number, because the mean of its divisors is an integer number (5992832520).

Almost surely, 2^138259355557 is an apocalyptic number.

It is an amenable number.

138259355557 is a deficient number, since it is larger than the sum of its proper divisors (5568624923).

138259355557 is an frugal number, since it uses more digits than its factorization.

138259355557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3421 (or 3324 counting only the distinct ones).

The product of its digits is 28350000, while the sum is 58.

The spelling of 138259355557 in words is "one hundred thirty-eight billion, two hundred fifty-nine million, three hundred fifty-five thousand, five hundred fifty-seven".