135142050551 has 4 divisors (see below), whose sum is σ = 135349006872. Its totient is φ = 134935094232.

The previous prime is 135142050541. The next prime is 135142050607. The reversal of 135142050551 is 155050241531.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135142050551 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 (135142050541) 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, 103477181 + ... + 103478486.

It is an arithmetic number, because the mean of its divisors is an integer number (33837251718).

Almost surely, 2^135142050551 is an apocalyptic number.

135142050551 is a deficient number, since it is larger than the sum of its proper divisors (206956321).

135142050551 is an equidigital number, since it uses as much as digits as its factorization.

135142050551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206956320.

The product of its (nonzero) digits is 15000, while the sum is 32.

The spelling of 135142050551 in words is "one hundred thirty-five billion, one hundred forty-two million, fifty thousand, five hundred fifty-one".