133505001550 has 24 divisors (see below), whose sum is σ = 254375875152. Its totient is φ = 52099512000.

The previous prime is 133505001541. The next prime is 133505001557. The reversal of 133505001550 is 55100505331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133505001557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32560146 + ... + 32564245.

It is an arithmetic number, because the mean of its divisors is an integer number (10598994798).

Almost surely, 2^133505001550 is an apocalyptic number.

133505001550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133505001550 is a deficient number, since it is larger than the sum of its proper divisors (120870873602).

133505001550 is a wasteful number, since it uses less digits than its factorization.

133505001550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65124444 (or 65124439 counting only the distinct ones).

The product of its (nonzero) digits is 5625, while the sum is 28.

Adding to 133505001550 its reverse (55100505331), we get a palindrome (188605506881).

The spelling of 133505001550 in words is "one hundred thirty-three billion, five hundred five million, one thousand, five hundred fifty".