1591503616045 has 16 divisors (see below), whose sum is σ = 2204243768448. Its totient is φ = 1080511646400.

The previous prime is 1591503616037. The next prime is 1591503616049. The reversal of 1591503616045 is 5406163051951.

It is not a de Polignac number, because 1591503616045 - 2³ = 1591503616037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1591503615986 and 1591503616004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1591503616049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 225103059 + ... + 225110128.

It is an arithmetic number, because the mean of its divisors is an integer number (137765235528).

Almost surely, 2^{1591503616045} is an apocalyptic number.

It is an amenable number.

1591503616045 is a deficient number, since it is larger than the sum of its proper divisors (612740152403).

1591503616045 is a wasteful number, since it uses less digits than its factorization.

1591503616045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450213300.

The product of its (nonzero) digits is 486000, while the sum is 46.

Adding to 1591503616045 its reverse (5406163051951), we get a palindrome (6997666667996).

The spelling of 1591503616045 in words is "one trillion, five hundred ninety-one billion, five hundred three million, six hundred sixteen thousand, forty-five".