1020205434133 has 4 divisors (see below), whose sum is σ = 1023998019660. Its totient is φ = 1016412848608.

The previous prime is 1020205434113. The next prime is 1020205434173. The reversal of 1020205434133 is 3314345020201.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 350651096964 + 669554337169 = 592158^2 + 818263^2 .

It is a cyclic number.

It is not a de Polignac number, because 1020205434133 - 2²¹ = 1020203336981 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 (1020205434113) 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, 1896292360 + ... + 1896292897.

It is an arithmetic number, because the mean of its divisors is an integer number (255999504915).

Almost surely, 2^{1020205434133} is an apocalyptic number.

It is an amenable number.

1020205434133 is a deficient number, since it is larger than the sum of its proper divisors (3792585527).

1020205434133 is an equidigital number, since it uses as much as digits as its factorization.

1020205434133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3792585526.

The product of its (nonzero) digits is 8640, while the sum is 28.

The spelling of 1020205434133 in words is "one trillion, twenty billion, two hundred five million, four hundred thirty-four thousand, one hundred thirty-three".