20049555693 has 16 divisors (see below), whose sum is σ = 28397476800. Its totient is φ = 12539126016.

The previous prime is 20049555683. The next prime is 20049555697. The reversal of 20049555693 is 39655594002.

It is a happy number.

It is not a de Polignac number, because 20049555693 - 2⁵ = 20049555661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20049555697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 624618 + ... + 655931.

It is an arithmetic number, because the mean of its divisors is an integer number (1774842300).

Almost surely, 2^20049555693 is an apocalyptic number.

It is an amenable number.

20049555693 is a deficient number, since it is larger than the sum of its proper divisors (8347921107).

20049555693 is a wasteful number, since it uses less digits than its factorization.

20049555693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1280876.

The product of its (nonzero) digits is 1458000, while the sum is 48.

The spelling of 20049555693 in words is "twenty billion, forty-nine million, five hundred fifty-five thousand, six hundred ninety-three".