139591833049 has 4 divisors (see below), whose sum is σ = 147803117364. Its totient is φ = 131380548736.

The previous prime is 139591833037. The next prime is 139591833089. The reversal of 139591833049 is 940338195931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 940338195931 = 6353 ⋅148014827.

It can be written as a sum of positive squares in 2 ways, for example, as 120968318025 + 18623515024 = 347805^2 + 136468^2 .

It is a cyclic number.

It is not a de Polignac number, because 139591833049 - 2¹⁵ = 139591800281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139591833089) 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, 4105642132 + ... + 4105642165.

It is an arithmetic number, because the mean of its divisors is an integer number (36950779341).

Almost surely, 2^139591833049 is an apocalyptic number.

It is an amenable number.

139591833049 is a deficient number, since it is larger than the sum of its proper divisors (8211284315).

139591833049 is an equidigital number, since it uses as much as digits as its factorization.

139591833049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8211284314.

The product of its (nonzero) digits is 3149280, while the sum is 55.

The spelling of 139591833049 in words is "one hundred thirty-nine billion, five hundred ninety-one million, eight hundred thirty-three thousand, forty-nine".