133031501553 has 16 divisors (see below), whose sum is σ = 183527657280. Its totient is φ = 85612704576.

The previous prime is 133031501509. The next prime is 133031501557. The reversal of 133031501553 is 355105130331.

It is not a de Polignac number, because 133031501553 - 2⁹ = 133031501041 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 133031501553.

It is not an unprimeable number, because it can be changed into a prime (133031501557) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 305026 + ... + 599252.

It is an arithmetic number, because the mean of its divisors is an integer number (11470478580).

Almost surely, 2^133031501553 is an apocalyptic number.

It is an amenable number.

133031501553 is a deficient number, since it is larger than the sum of its proper divisors (50496155727).

133031501553 is a wasteful number, since it uses less digits than its factorization.

133031501553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299456.

The product of its (nonzero) digits is 10125, while the sum is 30.

Adding to 133031501553 its reverse (355105130331), we get a palindrome (488136631884).

The spelling of 133031501553 in words is "one hundred thirty-three billion, thirty-one million, five hundred one thousand, five hundred fifty-three".