138297790262 has 4 divisors (see below), whose sum is σ = 207446685396. Its totient is φ = 69148895130.

The previous prime is 138297790259. The next prime is 138297790321. The reversal of 138297790262 is 262097792831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 262097792831 = 7 ⋅37442541833.

It is a junction number, because it is equal to n+sod(n) for n = 138297790198 and 138297790207.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 34574447564 + ... + 34574447567.

It is an arithmetic number, because the mean of its divisors is an integer number (51861671349).

Almost surely, 2^138297790262 is an apocalyptic number.

138297790262 is a deficient number, since it is larger than the sum of its proper divisors (69148895134).

138297790262 is an equidigital number, since it uses as much as digits as its factorization.

138297790262 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69148895133.

The product of its (nonzero) digits is 4572288, while the sum is 56.

The spelling of 138297790262 in words is "one hundred thirty-eight billion, two hundred ninety-seven million, seven hundred ninety thousand, two hundred sixty-two".