45205765873 has 4 divisors (see below), whose sum is σ = 45620497780. Its totient is φ = 44791033968.

The previous prime is 45205765853. The next prime is 45205765907. The reversal of 45205765873 is 37856750254.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 35138252304 + 10067513569 = 187452^2 + 100337^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45205765873 is a prime.

It is a super-2 number, since 2×45205765873² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 45205765873.

It is not an unprimeable number, because it can be changed into a prime (45205765853) 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, 207365790 + ... + 207366007.

It is an arithmetic number, because the mean of its divisors is an integer number (11405124445).

Almost surely, 2^45205765873 is an apocalyptic number.

It is an amenable number.

45205765873 is a deficient number, since it is larger than the sum of its proper divisors (414731907).

45205765873 is a wasteful number, since it uses less digits than its factorization.

45205765873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414731906.

The product of its (nonzero) digits is 7056000, while the sum is 52.

The spelling of 45205765873 in words is "forty-five billion, two hundred five million, seven hundred sixty-five thousand, eight hundred seventy-three".