20545483161 has 64 divisors (see below), whose sum is σ = 35025592320. Its totient is φ = 10428549120.

The previous prime is 20545483121. The next prime is 20545483169. The reversal of 20545483161 is 16138454502.

It is not a de Polignac number, because 20545483161 - 2¹¹ = 20545481113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20545483169) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1832605 + ... + 1843781.

It is an arithmetic number, because the mean of its divisors is an integer number (547274880).

Almost surely, 2^20545483161 is an apocalyptic number.

20545483161 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20545483161 is a deficient number, since it is larger than the sum of its proper divisors (14480109159).

20545483161 is a wasteful number, since it uses less digits than its factorization.

20545483161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11494.

The product of its (nonzero) digits is 115200, while the sum is 39.

The spelling of 20545483161 in words is "twenty billion, five hundred forty-five million, four hundred eighty-three thousand, one hundred sixty-one".