138669762798 has 48 divisors (see below), whose sum is σ = 343694289120. Its totient is φ = 39582831168.

The previous prime is 138669762797. The next prime is 138669762839. The reversal of 138669762798 is 897267966831.

It is a super-2 number, since 2×138669762798² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138669762797) 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, 380065 + ... + 649452.

It is an arithmetic number, because the mean of its divisors is an integer number (7160297690).

Almost surely, 2^138669762798 is an apocalyptic number.

138669762798 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

138669762798 is an abundant number, since it is smaller than the sum of its proper divisors (205024526322).

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

138669762798 is a wasteful number, since it uses less digits than its factorization.

138669762798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1030601 (or 1030598 counting only the distinct ones).

The product of its digits is 329204736, while the sum is 72.

The spelling of 138669762798 in words is "one hundred thirty-eight billion, six hundred sixty-nine million, seven hundred sixty-two thousand, seven hundred ninety-eight".