15533002139 has 2 divisors, whose sum is σ = 15533002140. Its totient is φ = 15533002138.

The previous prime is 15533002099. The next prime is 15533002159. The reversal of 15533002139 is 93120033551.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15533002139 is a prime.

It is not a weakly prime, because it can be changed into another prime (15533002159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7766501069 + 7766501070.

It is an arithmetic number, because the mean of its divisors is an integer number (7766501070).

Almost surely, 2^15533002139 is an apocalyptic number.

15533002139 is a deficient number, since it is larger than the sum of its proper divisors (1).

15533002139 is an equidigital number, since it uses as much as digits as its factorization.

15533002139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12150, while the sum is 32.

The spelling of 15533002139 in words is "fifteen billion, five hundred thirty-three million, two thousand, one hundred thirty-nine".