15139039933 has 4 divisors (see below), whose sum is σ = 15139293660. Its totient is φ = 15138786208.

The previous prime is 15139039919. The next prime is 15139039961. The reversal of 15139039933 is 33993093151.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 33993093151 = 8353 ⋅4069567.

It can be written as a sum of positive squares in 2 ways, for example, as 10171327609 + 4967712324 = 100853^2 + 70482^2 .

It is a cyclic number.

It is not a de Polignac number, because 15139039933 - 2⁵ = 15139039901 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 (15139039973) 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, 17073 + ... + 174841.

It is an arithmetic number, because the mean of its divisors is an integer number (3784823415).

Almost surely, 2^15139039933 is an apocalyptic number.

It is an amenable number.

15139039933 is a deficient number, since it is larger than the sum of its proper divisors (253727).

15139039933 is an equidigital number, since it uses as much as digits as its factorization.

15139039933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253726.

The product of its (nonzero) digits is 295245, while the sum is 46.

The spelling of 15139039933 in words is "fifteen billion, one hundred thirty-nine million, thirty-nine thousand, nine hundred thirty-three".