1528130811551 has 4 divisors (see below), whose sum is σ = 1546542026232. Its totient is φ = 1509719596872.

The previous prime is 1528130811539. The next prime is 1528130811617. The reversal of 1528130811551 is 1551180318251.

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

It is a cyclic number.

It is not a de Polignac number, because 1528130811551 - 2¹⁰ = 1528130810527 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1528130811499 and 1528130811508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1528130813551) 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, 9205607216 + ... + 9205607381.

It is an arithmetic number, because the mean of its divisors is an integer number (386635506558).

Almost surely, 2^{1528130811551} is an apocalyptic number.

1528130811551 is a deficient number, since it is larger than the sum of its proper divisors (18411214681).

1528130811551 is an equidigital number, since it uses as much as digits as its factorization.

1528130811551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18411214680.

The product of its (nonzero) digits is 48000, while the sum is 41.

The spelling of 1528130811551 in words is "one trillion, five hundred twenty-eight billion, one hundred thirty million, eight hundred eleven thousand, five hundred fifty-one".