45205638609 has 16 divisors (see below), whose sum is σ = 60458596352. Its totient is φ = 30044942928.

The previous prime is 45205638601. The next prime is 45205638661. The reversal of 45205638609 is 90683650254.

It is not a de Polignac number, because 45205638609 - 2³ = 45205638601 is a prime.

It is a super-2 number, since 2×45205638609² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45205638601) 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 15 ways as a sum of consecutive naturals, for example, 4865082 + ... + 4874364.

It is an arithmetic number, because the mean of its divisors is an integer number (3778662272).

Almost surely, 2^45205638609 is an apocalyptic number.

It is an amenable number.

45205638609 is a deficient number, since it is larger than the sum of its proper divisors (15252957743).

45205638609 is a wasteful number, since it uses less digits than its factorization.

45205638609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14076.

The product of its (nonzero) digits is 1555200, while the sum is 48.

The spelling of 45205638609 in words is "forty-five billion, two hundred five million, six hundred thirty-eight thousand, six hundred nine".