221810046790 has 16 divisors (see below), whose sum is σ = 401016934512. Its totient is φ = 88333163104.

The previous prime is 221810046763. The next prime is 221810046793. The reversal of 221810046790 is 97640018122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221810046793) 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, 48854569 + ... + 48859108.

It is an arithmetic number, because the mean of its divisors is an integer number (25063558407).

Almost surely, 2^221810046790 is an apocalyptic number.

221810046790 is a deficient number, since it is larger than the sum of its proper divisors (179206887722).

221810046790 is a wasteful number, since it uses less digits than its factorization.

221810046790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97713911.

The product of its (nonzero) digits is 48384, while the sum is 40.

The spelling of 221810046790 in words is "two hundred twenty-one billion, eight hundred ten million, forty-six thousand, seven hundred ninety".