138040793594 has 32 divisors (see below), whose sum is σ = 251760312000. Its totient is φ = 55946730240.

The previous prime is 138040793593. The next prime is 138040793609. The reversal of 138040793594 is 495397040831.

It is a super-2 number, since 2×138040793594² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (138040793593) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9705869 + ... + 9720080.

It is an arithmetic number, because the mean of its divisors is an integer number (7867509750).

Almost surely, 2^138040793594 is an apocalyptic number.

138040793594 is a deficient number, since it is larger than the sum of its proper divisors (113719518406).

138040793594 is a wasteful number, since it uses less digits than its factorization.

138040793594 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19425998.

The product of its (nonzero) digits is 3265920, while the sum is 53.

The spelling of 138040793594 in words is "one hundred thirty-eight billion, forty million, seven hundred ninety-three thousand, five hundred ninety-four".