138761745726526 has 8 divisors (see below), whose sum is σ = 224153589250584. Its totient is φ = 64043882643000.

The previous prime is 138761745726509. The next prime is 138761745726547. The reversal of 138761745726526 is 625627547167831.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2668495110100 + ... + 2668495110151.

It is an arithmetic number, because the mean of its divisors is an integer number (28019198656323).

Almost surely, 2^{138761745726526} is an apocalyptic number.

138761745726526 is a deficient number, since it is larger than the sum of its proper divisors (85391843524058).

138761745726526 is a wasteful number, since it uses less digits than its factorization.

138761745726526 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5336990220266.

The product of its digits is 711244800, while the sum is 70.

The spelling of 138761745726526 in words is "one hundred thirty-eight trillion, seven hundred sixty-one billion, seven hundred forty-five million, seven hundred twenty-six thousand, five hundred twenty-six".