45545544391 has 8 divisors (see below), whose sum is σ = 46258111584. Its totient is φ = 44835373440.

The previous prime is 45545544389. The next prime is 45545544419. The reversal of 45545544391 is 19344554554.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 45545544391 - 2¹ = 45545544389 is a prime.

It is a super-2 number, since 2×45545544391² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45545544371) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 560731 + ... + 636796.

It is an arithmetic number, because the mean of its divisors is an integer number (5782263948).

Almost surely, 2^45545544391 is an apocalyptic number.

45545544391 is a deficient number, since it is larger than the sum of its proper divisors (712567193).

45545544391 is a wasteful number, since it uses less digits than its factorization.

45545544391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1198121.

The product of its digits is 4320000, while the sum is 49.

The spelling of 45545544391 in words is "forty-five billion, five hundred forty-five million, five hundred forty-four thousand, three hundred ninety-one".