4640650185566 has 4 divisors (see below), whose sum is σ = 6960975278352. Its totient is φ = 2320325092782.

The previous prime is 4640650185559. The next prime is 4640650185583. The reversal of 4640650185566 is 6655810560464.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1160162546390 + ... + 1160162546393.

It is an arithmetic number, because the mean of its divisors is an integer number (1740243819588).

Almost surely, 2^{4640650185566} is an apocalyptic number.

4640650185566 is a deficient number, since it is larger than the sum of its proper divisors (2320325092786).

4640650185566 is a wasteful number, since it uses less digits than its factorization.

4640650185566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2320325092785.

The product of its (nonzero) digits is 20736000, while the sum is 56.

The spelling of 4640650185566 in words is "four trillion, six hundred forty billion, six hundred fifty million, one hundred eighty-five thousand, five hundred sixty-six".