20201159749 has 8 divisors (see below), whose sum is σ = 20512663488. Its totient is φ = 19889950080.

The previous prime is 20201159731. The next prime is 20201159779. The reversal of 20201159749 is 94795110202.

It is a happy number.

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 20201159749 - 2⁷ = 20201159621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20201159729) 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, 66984 + ... + 211870.

It is an arithmetic number, because the mean of its divisors is an integer number (2564082936).

Almost surely, 2^20201159749 is an apocalyptic number.

It is an amenable number.

20201159749 is a deficient number, since it is larger than the sum of its proper divisors (311503739).

20201159749 is a wasteful number, since it uses less digits than its factorization.

20201159749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147035.

The product of its (nonzero) digits is 45360, while the sum is 40.

The spelling of 20201159749 in words is "twenty billion, two hundred one million, one hundred fifty-nine thousand, seven hundred forty-nine".