1228524385535 has 4 divisors (see below), whose sum is σ = 1474229262648. Its totient is φ = 982819508424.

The previous prime is 1228524385519. The next prime is 1228524385541. The reversal of 1228524385535 is 5355834258221.

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

It is a cyclic number.

It is not a de Polignac number, because 1228524385535 - 2⁴ = 1228524385519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122852438549 + ... + 122852438558.

It is an arithmetic number, because the mean of its divisors is an integer number (368557315662).

Almost surely, 2^{1228524385535} is an apocalyptic number.

1228524385535 is a deficient number, since it is larger than the sum of its proper divisors (245704877113).

1228524385535 is an equidigital number, since it uses as much as digits as its factorization.

1228524385535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245704877112.

The product of its digits is 11520000, while the sum is 53.

The spelling of 1228524385535 in words is "one trillion, two hundred twenty-eight billion, five hundred twenty-four million, three hundred eighty-five thousand, five hundred thirty-five".