9920136001 has 4 divisors (see below), whose sum is σ = 9957014100. Its totient is φ = 9883257904.

The previous prime is 9920135993. The next prime is 9920136011. The reversal of 9920136001 is 1006310299.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1006310299 = 193 ⋅5214043.

It can be written as a sum of positive squares in 2 ways, for example, as 815159601 + 9104976400 = 28551^2 + 95420^2 .

It is a cyclic number.

It is not a de Polignac number, because 9920136001 - 2³ = 9920135993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9920136011) 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, 18438646 + ... + 18439183.

It is an arithmetic number, because the mean of its divisors is an integer number (2489253525).

Almost surely, 2^9920136001 is an apocalyptic number.

It is an amenable number.

9920136001 is a deficient number, since it is larger than the sum of its proper divisors (36878099).

9920136001 is a wasteful number, since it uses less digits than its factorization.

9920136001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36878098.

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 9920136001 is about 99599.8795230195. The cubic root of 9920136001 is about 2148.6839612150.

The spelling of 9920136001 in words is "nine billion, nine hundred twenty million, one hundred thirty-six thousand, one".