20736633049 has 16 divisors (see below), whose sum is σ = 22702680000. Its totient is φ = 18784184320.

The previous prime is 20736633037. The next prime is 20736633061. The reversal of 20736633049 is 94033663702.

It is an interprime number because it is at equal distance from previous prime (20736633037) and next prime (20736633061).

It is not a de Polignac number, because 20736633049 - 2⁷ = 20736632921 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20736632996 and 20736633014.

It is not an unprimeable number, because it can be changed into a prime (20736633149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4832697 + ... + 4836985.

It is an arithmetic number, because the mean of its divisors is an integer number (1418917500).

Almost surely, 2^20736633049 is an apocalyptic number.

It is an amenable number.

20736633049 is a deficient number, since it is larger than the sum of its proper divisors (1966046951).

20736633049 is a wasteful number, since it uses less digits than its factorization.

20736633049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5768.

The product of its (nonzero) digits is 489888, while the sum is 43.

The spelling of 20736633049 in words is "twenty billion, seven hundred thirty-six million, six hundred thirty-three thousand, forty-nine".