2101561433 has 8 divisors (see below), whose sum is σ = 2121520800. Its totient is φ = 2081671488.

The previous prime is 2101561421. The next prime is 2101561453. The reversal of 2101561433 is 3341651012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2101561433 - 2⁴ = 2101561417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2101561453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44513 + ... + 78641.

It is an arithmetic number, because the mean of its divisors is an integer number (265190100).

Almost surely, 2^2101561433 is an apocalyptic number.

It is an amenable number.

2101561433 is a deficient number, since it is larger than the sum of its proper divisors (19959367).

2101561433 is a wasteful number, since it uses less digits than its factorization.

2101561433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34711.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 2101561433 is about 45842.7904146334. The cubic root of 2101561433 is about 1280.8964734309.

The spelling of 2101561433 in words is "two billion, one hundred one million, five hundred sixty-one thousand, four hundred thirty-three".