138763751526 has 48 divisors (see below), whose sum is σ = 301311822240. Its totient is φ = 46153618560.

The previous prime is 138763751491. The next prime is 138763751543. The reversal of 138763751526 is 625157367831.

138763751526 is a `hidden beast` number, since 1 + 3 + 8 + 7 + 63 + 7 + 51 + 526 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18348786 + ... + 18356346.

It is an arithmetic number, because the mean of its divisors is an integer number (6277329630).

Almost surely, 2^138763751526 is an apocalyptic number.

138763751526 is an abundant number, since it is smaller than the sum of its proper divisors (162548070714).

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

138763751526 is a wasteful number, since it uses less digits than its factorization.

138763751526 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9661 (or 9658 counting only the distinct ones).

The product of its digits is 6350400, while the sum is 54.

The spelling of 138763751526 in words is "one hundred thirty-eight billion, seven hundred sixty-three million, seven hundred fifty-one thousand, five hundred twenty-six".