20554650073 has 16 divisors (see below), whose sum is σ = 21510074880. Its totient is φ = 19616196096.

The previous prime is 20554650059. The next prime is 20554650119. The reversal of 20554650073 is 37005645502.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20554650073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20554653073) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2423386 + ... + 2431852.

It is an arithmetic number, because the mean of its divisors is an integer number (1344379680).

Almost surely, 2^20554650073 is an apocalyptic number.

It is an amenable number.

20554650073 is a deficient number, since it is larger than the sum of its proper divisors (955424807).

20554650073 is an equidigital number, since it uses as much as digits as its factorization.

20554650073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9456.

The product of its (nonzero) digits is 126000, while the sum is 37.

The spelling of 20554650073 in words is "twenty billion, five hundred fifty-four million, six hundred fifty thousand, seventy-three".