138794061507 has 8 divisors (see below), whose sum is σ = 185079979200. Its totient is φ = 92518759080.

The previous prime is 138794061467. The next prime is 138794061541. The reversal of 138794061507 is 705160497831.

It is a happy number.

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

It is not a de Polignac number, because 138794061507 - 2⁷ = 138794061379 is a prime.

It is a super-2 number, since 2×138794061507² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 138794061507.

It is not an unprimeable number, because it can be changed into a prime (138794061557) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2623257 + ... + 2675642.

It is an arithmetic number, because the mean of its divisors is an integer number (23134997400).

Almost surely, 2^138794061507 is an apocalyptic number.

138794061507 is a deficient number, since it is larger than the sum of its proper divisors (46285917693).

138794061507 is an equidigital number, since it uses as much as digits as its factorization.

138794061507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5307633.

The product of its (nonzero) digits is 1270080, while the sum is 51.

The spelling of 138794061507 in words is "one hundred thirty-eight billion, seven hundred ninety-four million, sixty-one thousand, five hundred seven".