15146556449 has 4 divisors (see below), whose sum is σ = 15146802864. Its totient is φ = 15146310036.

The previous prime is 15146556437. The next prime is 15146556463. The reversal of 15146556449 is 94465564151.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 15146556449 - 2⁴ = 15146556433 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15146556397 and 15146556406.

It is not an unprimeable number, because it can be changed into a prime (15146555449) 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, 52934 + ... + 181920.

It is an arithmetic number, because the mean of its divisors is an integer number (3786700716).

Almost surely, 2^15146556449 is an apocalyptic number.

It is an amenable number.

15146556449 is a deficient number, since it is larger than the sum of its proper divisors (246415).

15146556449 is a wasteful number, since it uses less digits than its factorization.

15146556449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246414.

The product of its digits is 2592000, while the sum is 50.

The spelling of 15146556449 in words is "fifteen billion, one hundred forty-six million, five hundred fifty-six thousand, four hundred forty-nine".