45518271651 has 20 divisors (see below), whose sum is σ = 69577748152. Its totient is φ = 29639802528.

The previous prime is 45518271649. The next prime is 45518271661. The reversal of 45518271651 is 15617281554.

45518271651 is a `hidden beast` number, since 4 + 5 + 518 + 2 + 71 + 65 + 1 = 666.

It is not a de Polignac number, because 45518271651 - 2¹ = 45518271649 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 45518271597 and 45518271606.

It is not an unprimeable number, because it can be changed into a prime (45518271641) 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 19 ways as a sum of consecutive naturals, for example, 6530866 + ... + 6537831.

Almost surely, 2^45518271651 is an apocalyptic number.

45518271651 is a deficient number, since it is larger than the sum of its proper divisors (24059476501).

45518271651 is a wasteful number, since it uses less digits than its factorization.

45518271651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13068752 (or 13068743 counting only the distinct ones).

The product of its digits is 336000, while the sum is 45.

The spelling of 45518271651 in words is "forty-five billion, five hundred eighteen million, two hundred seventy-one thousand, six hundred fifty-one".