1355628898991 has 2 divisors, whose sum is σ = 1355628898992. Its totient is φ = 1355628898990.

The previous prime is 1355628898979. The next prime is 1355628899017. The reversal of 1355628898991 is 1998988265531.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1355628898991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1355628897991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 677814449495 + 677814449496.

It is an arithmetic number, because the mean of its divisors is an integer number (677814449496).

Almost surely, 2^{1355628898991} is an apocalyptic number.

1355628898991 is a deficient number, since it is larger than the sum of its proper divisors (1).

1355628898991 is an equidigital number, since it uses as much as digits as its factorization.

1355628898991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 335923200, while the sum is 74.

The spelling of 1355628898991 in words is "one trillion, three hundred fifty-five billion, six hundred twenty-eight million, eight hundred ninety-eight thousand, nine hundred ninety-one".