45279997909 has 4 divisors (see below), whose sum is σ = 45625646880. Its totient is φ = 44934348940.

The previous prime is 45279997853. The next prime is 45279997921. The reversal of 45279997909 is 90979997254.

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, and also an emirpimes, since its reverse is a distinct semiprime: 90979997254 = 2 ⋅45489998627.

It is a cyclic number.

It is not a de Polignac number, because 45279997909 - 2¹¹ = 45279995861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45279907909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 172824289 + ... + 172824550.

It is an arithmetic number, because the mean of its divisors is an integer number (11406411720).

Almost surely, 2^45279997909 is an apocalyptic number.

It is an amenable number.

45279997909 is a deficient number, since it is larger than the sum of its proper divisors (345648971).

45279997909 is a wasteful number, since it uses less digits than its factorization.

45279997909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345648970.

The product of its (nonzero) digits is 115736040, while the sum is 70.

The spelling of 45279997909 in words is "forty-five billion, two hundred seventy-nine million, nine hundred ninety-seven thousand, nine hundred nine".