45456843821 has 8 divisors (see below), whose sum is σ = 46205949624. Its totient is φ = 44707864320.

The previous prime is 45456843791. The next prime is 45456843823. The reversal of 45456843821 is 12834865454.

It can be written as a sum of positive squares in 4 ways, for example, as 236821321 + 45220022500 = 15389^2 + 212650^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45456843821 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 45456843821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45456843823) 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, 936281 + ... + 983633.

It is an arithmetic number, because the mean of its divisors is an integer number (5775743703).

Almost surely, 2^45456843821 is an apocalyptic number.

It is an amenable number.

45456843821 is a deficient number, since it is larger than the sum of its proper divisors (749105803).

45456843821 is a wasteful number, since it uses less digits than its factorization.

45456843821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63151.

The product of its digits is 3686400, while the sum is 50.

The spelling of 45456843821 in words is "forty-five billion, four hundred fifty-six million, eight hundred forty-three thousand, eight hundred twenty-one".