33545343989 has 4 divisors (see below), whose sum is σ = 33670048140. Its totient is φ = 33420639840.

The previous prime is 33545343977. The next prime is 33545344057. The reversal of 33545343989 is 98934354533.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98934354533 = 7 ⋅14133479219.

It can be written as a sum of positive squares in 2 ways, for example, as 20444710225 + 13100633764 = 142985^2 + 114458^2 .

It is a cyclic number.

It is not a de Polignac number, because 33545343989 - 2⁴ = 33545343973 is a prime.

It is a super-2 number, since 2×33545343989² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33545343919) 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, 62351672 + ... + 62352209.

It is an arithmetic number, because the mean of its divisors is an integer number (8417512035).

Almost surely, 2^33545343989 is an apocalyptic number.

It is an amenable number.

33545343989 is a deficient number, since it is larger than the sum of its proper divisors (124704151).

33545343989 is a wasteful number, since it uses less digits than its factorization.

33545343989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124704150.

The product of its digits is 20995200, while the sum is 56.

The spelling of 33545343989 in words is "thirty-three billion, five hundred forty-five million, three hundred forty-three thousand, nine hundred eighty-nine".