20949250546 has 32 divisors (see below), whose sum is σ = 38170229760. Its totient is φ = 8423120016.

The previous prime is 20949250529. The next prime is 20949250559. The reversal of 20949250546 is 64505294902.

It is a junction number, because it is equal to n+sod(n) for n = 20949250496 and 20949250505.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 354916 + ... + 409711.

It is an arithmetic number, because the mean of its divisors is an integer number (1192819680).

Almost surely, 2^20949250546 is an apocalyptic number.

20949250546 is a deficient number, since it is larger than the sum of its proper divisors (17220979214).

20949250546 is a wasteful number, since it uses less digits than its factorization.

20949250546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 764758.

The product of its (nonzero) digits is 777600, while the sum is 46.

The spelling of 20949250546 in words is "twenty billion, nine hundred forty-nine million, two hundred fifty thousand, five hundred forty-six".