20465655273 has 12 divisors (see below), whose sum is σ = 33784573888. Its totient is φ = 11694660120.

The previous prime is 20465655263. The next prime is 20465655317. The reversal of 20465655273 is 37255656402.

20465655273 is a `hidden beast` number, since 2 + 0 + 4 + 65 + 65 + 527 + 3 = 666.

It is not a de Polignac number, because 20465655273 - 2⁴ = 20465655257 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20465655263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 162425773 + ... + 162425898.

Almost surely, 2^20465655273 is an apocalyptic number.

It is an amenable number.

20465655273 is a deficient number, since it is larger than the sum of its proper divisors (13318918615).

20465655273 is a wasteful number, since it uses less digits than its factorization.

20465655273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324851684 (or 324851681 counting only the distinct ones).

The product of its (nonzero) digits is 1512000, while the sum is 45.

The spelling of 20465655273 in words is "twenty billion, four hundred sixty-five million, six hundred fifty-five thousand, two hundred seventy-three".