139005748837 has 4 divisors (see below), whose sum is σ = 139392951840. Its totient is φ = 138618545836.

The previous prime is 139005748813. The next prime is 139005748841. The reversal of 139005748837 is 738847500931.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 738847500931 = 3581 ⋅206324351.

It is a cyclic number.

It is not a de Polignac number, because 139005748837 - 2⁷ = 139005748709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139005748877) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 193600963 + ... + 193601680.

It is an arithmetic number, because the mean of its divisors is an integer number (34848237960).

Almost surely, 2^139005748837 is an apocalyptic number.

It is an amenable number.

139005748837 is a deficient number, since it is larger than the sum of its proper divisors (387203003).

139005748837 is an equidigital number, since it uses as much as digits as its factorization.

139005748837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387203002.

The product of its (nonzero) digits is 5080320, while the sum is 55.

The spelling of 139005748837 in words is "one hundred thirty-nine billion, five million, seven hundred forty-eight thousand, eight hundred thirty-seven".