4561466640 has 40 divisors (see below), whose sum is σ = 14140547328. Its totient is φ = 1216391040.

The previous prime is 4561466599. The next prime is 4561466647. The reversal of 4561466640 is 466641654.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 4561466592 and 4561466601.

It is not an unprimeable number, because it can be changed into a prime (4561466647) 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, 9502816 + ... + 9503295.

Almost surely, 2^4561466640 is an apocalyptic number.

4561466640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4561466640 is an abundant number, since it is smaller than the sum of its proper divisors (9579080688).

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

4561466640 is a wasteful number, since it uses less digits than its factorization.

4561466640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19006127 (or 19006121 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 42.

The square root of 4561466640 is about 67538.6307234608. The cubic root of 4561466640 is about 1658.4466331912.

The spelling of 4561466640 in words is "four billion, five hundred sixty-one million, four hundred sixty-six thousand, six hundred forty".