133551550244550 has 48 divisors (see below), whose sum is σ = 331917069287232. Its totient is φ = 35537486013600.

The previous prime is 133551550244531. The next prime is 133551550244569. The reversal of 133551550244550 is 55442055155331.

It is an interprime number because it is at equal distance from previous prime (133551550244531) and next prime (133551550244569).

It is a self number, because there is not a number n which added to its sum of digits gives 133551550244550.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 953188696 + ... + 953328795.

It is an arithmetic number, because the mean of its divisors is an integer number (6914938943484).

Almost surely, 2^{133551550244550} is an apocalyptic number.

133551550244550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133551550244550 is an abundant number, since it is smaller than the sum of its proper divisors (198365519042682).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133551550244550 is a wasteful number, since it uses less digits than its factorization.

133551550244550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1906517973 (or 1906517968 counting only the distinct ones).

The product of its (nonzero) digits is 4500000, while the sum is 48.

The spelling of 133551550244550 in words is "one hundred thirty-three trillion, five hundred fifty-one billion, five hundred fifty million, two hundred forty-four thousand, five hundred fifty".