1530157515557 has 32 divisors (see below), whose sum is σ = 1771222723200. Its totient is φ = 1306437806080.

The previous prime is 1530157515529. The next prime is 1530157515637. The reversal of 1530157515557 is 7555157510351.

It is not a de Polignac number, because 1530157515557 - 2¹⁸ = 1530157253413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1530157515857) 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 31 ways as a sum of consecutive naturals, for example, 185762243 + ... + 185770479.

It is an arithmetic number, because the mean of its divisors is an integer number (55350710100).

Almost surely, 2^{1530157515557} is an apocalyptic number.

1530157515557 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1530157515557 is a deficient number, since it is larger than the sum of its proper divisors (241065207643).

1530157515557 is a wasteful number, since it uses less digits than its factorization.

1530157515557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10261.

The product of its (nonzero) digits is 2296875, while the sum is 50.

The spelling of 1530157515557 in words is "one trillion, five hundred thirty billion, one hundred fifty-seven million, five hundred fifteen thousand, five hundred fifty-seven".