1355805528971 has 8 divisors (see below), whose sum is σ = 1416668029440. Its totient is φ = 1295102564712.

The previous prime is 1355805528947. The next prime is 1355805529061. The reversal of 1355805528971 is 1798255085531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1355805528971 - 2³⁰ = 1354731787147 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1355805528971.

It is not an unprimeable number, because it can be changed into a prime (1355805528911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39866675 + ... + 39900668.

It is an arithmetic number, because the mean of its divisors is an integer number (177083503680).

Almost surely, 2^{1355805528971} is an apocalyptic number.

1355805528971 is a deficient number, since it is larger than the sum of its proper divisors (60862500469).

1355805528971 is an equidigital number, since it uses as much as digits as its factorization.

1355805528971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79768105.

The product of its (nonzero) digits is 15120000, while the sum is 59.

The spelling of 1355805528971 in words is "one trillion, three hundred fifty-five billion, eight hundred five million, five hundred twenty-eight thousand, nine hundred seventy-one".