15550504433 has 2 divisors, whose sum is σ = 15550504434. Its totient is φ = 15550504432.

The previous prime is 15550504369. The next prime is 15550504531. The reversal of 15550504433 is 33440505551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13405703089 + 2144801344 = 115783^2 + 46312^2 .

It is a cyclic number.

It is not a de Polignac number, because 15550504433 - 2⁶ = 15550504369 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 15550504393 and 15550504402.

It is not a weakly prime, because it can be changed into another prime (15550507433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7775252216 + 7775252217.

It is an arithmetic number, because the mean of its divisors is an integer number (7775252217).

Almost surely, 2^15550504433 is an apocalyptic number.

It is an amenable number.

15550504433 is a deficient number, since it is larger than the sum of its proper divisors (1).

15550504433 is an equidigital number, since it uses as much as digits as its factorization.

15550504433 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90000, while the sum is 35.

The spelling of 15550504433 in words is "fifteen billion, five hundred fifty million, five hundred four thousand, four hundred thirty-three".