45350221640 has 32 divisors (see below), whose sum is σ = 102077583480. Its totient is φ = 18133051392.

The previous prime is 45350221621. The next prime is 45350221643. The reversal of 45350221640 is 4612205354.

45350221640 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 31054193284 + 14296028356 = 176222^2 + 119566^2 .

It is a junction number, because it is equal to n+sod(n) for n = 45350221597 and 45350221606.

It is not an unprimeable number, because it can be changed into a prime (45350221643) 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, 114899 + ... + 322338.

Almost surely, 2^45350221640 is an apocalyptic number.

45350221640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45350221640 is an abundant number, since it is smaller than the sum of its proper divisors (56727361840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45350221640 is a wasteful number, since it uses less digits than its factorization.

45350221640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439841 (or 439837 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 45350221640 its reverse (4612205354), we get a palindrome (49962426994).

The spelling of 45350221640 in words is "forty-five billion, three hundred fifty million, two hundred twenty-one thousand, six hundred forty".