45155320649 has 4 divisors (see below), whose sum is σ = 45369327120. Its totient is φ = 44941314180.

The previous prime is 45155320631. The next prime is 45155320687. The reversal of 45155320649 is 94602355154.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 45155320649 - 2¹² = 45155316553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45155340649) 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 3 ways as a sum of consecutive naturals, for example, 107002919 + ... + 107003340.

It is an arithmetic number, because the mean of its divisors is an integer number (11342331780).

Almost surely, 2^45155320649 is an apocalyptic number.

It is an amenable number.

45155320649 is a deficient number, since it is larger than the sum of its proper divisors (214006471).

45155320649 is a wasteful number, since it uses less digits than its factorization.

45155320649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214006470.

The product of its (nonzero) digits is 648000, while the sum is 44.

The spelling of 45155320649 in words is "forty-five billion, one hundred fifty-five million, three hundred twenty thousand, six hundred forty-nine".