9901129533 has 4 divisors (see below), whose sum is σ = 13201506048. Its totient is φ = 6600753020.

The previous prime is 9901129531. The next prime is 9901129549. The reversal of 9901129533 is 3359211099.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3359211099 = 3 ⋅1119737033.

It is a cyclic number.

It is not a de Polignac number, because 9901129533 - 2¹ = 9901129531 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9901129531) 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, 1650188253 + ... + 1650188258.

It is an arithmetic number, because the mean of its divisors is an integer number (3300376512).

Almost surely, 2^9901129533 is an apocalyptic number.

It is an amenable number.

9901129533 is a deficient number, since it is larger than the sum of its proper divisors (3300376515).

9901129533 is a wasteful number, since it uses less digits than its factorization.

9901129533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3300376514.

The product of its (nonzero) digits is 65610, while the sum is 42.

The square root of 9901129533 is about 99504.4196656611. The cubic root of 9901129533 is about 2147.3108280752.

The spelling of 9901129533 in words is "nine billion, nine hundred one million, one hundred twenty-nine thousand, five hundred thirty-three".