20850680949 has 12 divisors (see below), whose sum is σ = 32339831904. Its totient is φ = 11914674744.

The previous prime is 20850680927. The next prime is 20850680953. The reversal of 20850680949 is 94908605802.

It is not a de Polignac number, because 20850680949 - 2⁷ = 20850680821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20850680989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 70920537 + ... + 70920830.

It is an arithmetic number, because the mean of its divisors is an integer number (2694985992).

Almost surely, 2^20850680949 is an apocalyptic number.

It is an amenable number.

20850680949 is a deficient number, since it is larger than the sum of its proper divisors (11489150955).

20850680949 is a wasteful number, since it uses less digits than its factorization.

20850680949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141841384 (or 141841377 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 51.

The spelling of 20850680949 in words is "twenty billion, eight hundred fifty million, six hundred eighty thousand, nine hundred forty-nine".