15504134413 has 2 divisors, whose sum is σ = 15504134414. Its totient is φ = 15504134412.

The previous prime is 15504134369. The next prime is 15504134441. The reversal of 15504134413 is 31443140551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12544448004 + 2959686409 = 112002^2 + 54403^2 .

It is a cyclic number.

It is not a de Polignac number, because 15504134413 - 2⁹ = 15504133901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15504134713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7752067206 + 7752067207.

It is an arithmetic number, because the mean of its divisors is an integer number (7752067207).

Almost surely, 2^15504134413 is an apocalyptic number.

It is an amenable number.

15504134413 is a deficient number, since it is larger than the sum of its proper divisors (1).

15504134413 is an equidigital number, since it uses as much as digits as its factorization.

15504134413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 15504134413 its reverse (31443140551), we get a palindrome (46947274964).

The spelling of 15504134413 in words is "fifteen billion, five hundred four million, one hundred thirty-four thousand, four hundred thirteen".