1615448048645 has 4 divisors (see below), whose sum is σ = 1938537658380. Its totient is φ = 1292358438912.

The previous prime is 1615448048629. The next prime is 1615448048681. The reversal of 1615448048645 is 5468408445161.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 947805443809 + 667642604836 = 973553^2 + 817094^2 .

It is a cyclic number.

It is not a de Polignac number, because 1615448048645 - 2⁴ = 1615448048629 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161544804860 + ... + 161544804869.

It is an arithmetic number, because the mean of its divisors is an integer number (484634414595).

Almost surely, 2^{1615448048645} is an apocalyptic number.

It is an amenable number.

1615448048645 is a deficient number, since it is larger than the sum of its proper divisors (323089609735).

1615448048645 is an equidigital number, since it uses as much as digits as its factorization.

1615448048645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323089609734.

The product of its (nonzero) digits is 14745600, while the sum is 56.

The spelling of 1615448048645 in words is "one trillion, six hundred fifteen billion, four hundred forty-eight million, forty-eight thousand, six hundred forty-five".