138589705722 has 96 divisors (see below), whose sum is σ = 316309613760. Its totient is φ = 40235616000.

The previous prime is 138589705711. The next prime is 138589705733. The reversal of 138589705722 is 227507985831.

It is an interprime number because it is at equal distance from previous prime (138589705711) and next prime (138589705733).

It is a super-2 number, since 2×138589705722² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 7057854 + ... + 7077462.

It is an arithmetic number, because the mean of its divisors is an integer number (3294891810).

Almost surely, 2^138589705722 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 138589705722, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158154806880).

138589705722 is an abundant number, since it is smaller than the sum of its proper divisors (177719908038).

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

138589705722 is a wasteful number, since it uses less digits than its factorization.

138589705722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19916 (or 19897 counting only the distinct ones).

The product of its (nonzero) digits is 8467200, while the sum is 57.

The spelling of 138589705722 in words is "one hundred thirty-eight billion, five hundred eighty-nine million, seven hundred five thousand, seven hundred twenty-two".