135243501056 has 20 divisors (see below), whose sum is σ = 270222855672. Its totient is φ = 67621750272.

The previous prime is 135243501049. The next prime is 135243501061. The reversal of 135243501056 is 650105342531.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132073220 + ... + 132074243.

Almost surely, 2^135243501056 is an apocalyptic number.

135243501056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

135243501056 is a deficient number, since it is larger than the sum of its proper divisors (134979354616).

135243501056 is an frugal number, since it uses more digits than its factorization.

135243501056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264147481 (or 264147465 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 35.

Adding to 135243501056 its reverse (650105342531), we get a palindrome (785348843587).

The spelling of 135243501056 in words is "one hundred thirty-five billion, two hundred forty-three million, five hundred one thousand, fifty-six".