1355828101091 has 4 divisors (see below), whose sum is σ = 1355908711632. Its totient is φ = 1355747490552.

The previous prime is 1355828101049. The next prime is 1355828101181. The reversal of 1355828101091 is 1901018285531.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1355828101091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1355828101021) 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, 40280036 + ... + 40313681.

It is an arithmetic number, because the mean of its divisors is an integer number (338977177908).

Almost surely, 2^{1355828101091} is an apocalyptic number.

1355828101091 is a deficient number, since it is larger than the sum of its proper divisors (80610541).

1355828101091 is an equidigital number, since it uses as much as digits as its factorization.

1355828101091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80610540.

The product of its (nonzero) digits is 86400, while the sum is 44.

The spelling of 1355828101091 in words is "one trillion, three hundred fifty-five billion, eight hundred twenty-eight million, one hundred one thousand, ninety-one".