45345121861 has 8 divisors (see below), whose sum is σ = 49754590200. Its totient is φ = 41067279552.

The previous prime is 45345121849. The next prime is 45345121879. The reversal of 45345121861 is 16812154354.

45345121861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 3741768900 + 41603352961 = 61170^2 + 203969^2 .

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

It is not a de Polignac number, because 45345121861 - 2³³ = 36755187269 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 (45345128861) 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, 32905786 + ... + 32907163.

It is an arithmetic number, because the mean of its divisors is an integer number (6219323775).

Almost surely, 2^45345121861 is an apocalyptic number.

It is an amenable number.

45345121861 is a deficient number, since it is larger than the sum of its proper divisors (4409468339).

45345121861 is a wasteful number, since it uses less digits than its factorization.

45345121861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65813015.

The product of its digits is 115200, while the sum is 40.

The spelling of 45345121861 in words is "forty-five billion, three hundred forty-five million, one hundred twenty-one thousand, eight hundred sixty-one".