15135045547 has 2 divisors, whose sum is σ = 15135045548. Its totient is φ = 15135045546.

The previous prime is 15135045493. The next prime is 15135045559. The reversal of 15135045547 is 74554053151.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 15135045547 - 2²³ = 15126656939 is a prime.

It is not a weakly prime, because it can be changed into another prime (15135045577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7567522773 + 7567522774.

It is an arithmetic number, because the mean of its divisors is an integer number (7567522774).

Almost surely, 2^15135045547 is an apocalyptic number.

15135045547 is a deficient number, since it is larger than the sum of its proper divisors (1).

15135045547 is an equidigital number, since it uses as much as digits as its factorization.

15135045547 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 210000, while the sum is 40.

Adding to 15135045547 its reverse (74554053151), we get a palindrome (89689098698).

The spelling of 15135045547 in words is "fifteen billion, one hundred thirty-five million, forty-five thousand, five hundred forty-seven".