138194262747 has 24 divisors (see below), whose sum is σ = 200211429600. Its totient is φ = 91853993088.

The previous prime is 138194262659. The next prime is 138194262763. The reversal of 138194262747 is 747262491831.

138194262747 is a `hidden beast` number, since 1 + 3 + 8 + 1 + 9 + 4 + 2 + 627 + 4 + 7 = 666.

It is not a de Polignac number, because 138194262747 - 2⁸ = 138194262491 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 138194262693 and 138194262702.

It is not an unprimeable number, because it can be changed into a prime (138194261747) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7459498 + ... + 7478000.

It is an arithmetic number, because the mean of its divisors is an integer number (8342142900).

Almost surely, 2^138194262747 is an apocalyptic number.

138194262747 is a deficient number, since it is larger than the sum of its proper divisors (62017166853).

138194262747 is a wasteful number, since it uses less digits than its factorization.

138194262747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20947 (or 20944 counting only the distinct ones).

The product of its digits is 4064256, while the sum is 54.

The spelling of 138194262747 in words is "one hundred thirty-eight billion, one hundred ninety-four million, two hundred sixty-two thousand, seven hundred forty-seven".