20349908755 has 8 divisors (see below), whose sum is σ = 26639880624. Its totient is φ = 14799933600.

The previous prime is 20349908753. The next prime is 20349908759. The reversal of 20349908755 is 55780994302.

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

It is not a de Polignac number, because 20349908755 - 2¹ = 20349908753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20349908753) 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, 184999116 + ... + 184999225.

It is an arithmetic number, because the mean of its divisors is an integer number (3329985078).

Almost surely, 2^20349908755 is an apocalyptic number.

20349908755 is a deficient number, since it is larger than the sum of its proper divisors (6289971869).

20349908755 is a wasteful number, since it uses less digits than its factorization.

20349908755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369998357.

The product of its (nonzero) digits is 2721600, while the sum is 52.

The spelling of 20349908755 in words is "twenty billion, three hundred forty-nine million, nine hundred eight thousand, seven hundred fifty-five".