45209779811 has 32 divisors (see below), whose sum is σ = 53220146688. Its totient is φ = 37608721920.

The previous prime is 45209779807. The next prime is 45209779903. The reversal of 45209779811 is 11897790254.

It is not a de Polignac number, because 45209779811 - 2² = 45209779807 is a prime.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45209779801) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9166016 + ... + 9170946.

It is an arithmetic number, because the mean of its divisors is an integer number (1663129584).

Almost surely, 2^45209779811 is an apocalyptic number.

45209779811 is a deficient number, since it is larger than the sum of its proper divisors (8010366877).

45209779811 is a wasteful number, since it uses less digits than its factorization.

45209779811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5291.

The product of its (nonzero) digits is 1270080, while the sum is 53.

The spelling of 45209779811 in words is "forty-five billion, two hundred nine million, seven hundred seventy-nine thousand, eight hundred eleven".