1021535535243 has 8 divisors (see below), whose sum is σ = 1363331123856. Its totient is φ = 680381818400.

The previous prime is 1021535535197. The next prime is 1021535535271. The reversal of 1021535535243 is 3425355351201.

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 1021535535243 - 2¹⁰ = 1021535534219 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1021535535043) 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, 160464228 + ... + 160470593.

It is an arithmetic number, because the mean of its divisors is an integer number (170416390482).

Almost surely, 2^{1021535535243} is an apocalyptic number.

1021535535243 is a deficient number, since it is larger than the sum of its proper divisors (341795588613).

1021535535243 is a wasteful number, since it uses less digits than its factorization.

1021535535243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320935885.

The product of its (nonzero) digits is 270000, while the sum is 39.

The spelling of 1021535535243 in words is "one trillion, twenty-one billion, five hundred thirty-five million, five hundred thirty-five thousand, two hundred forty-three".