221405743264516 has 12 divisors (see below), whose sum is σ = 387468035474688. Its totient is φ = 110700590271752.

The previous prime is 221405743264507. The next prime is 221405743264561. The reversal of 221405743264516 is 615462347504122.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 570121756 + ... + 570509971.

It is an arithmetic number, because the mean of its divisors is an integer number (32289002956224).

Almost surely, 2^{221405743264516} is an apocalyptic number.

It is an amenable number.

221405743264516 is a deficient number, since it is larger than the sum of its proper divisors (166062292210172).

221405743264516 is a wasteful number, since it uses less digits than its factorization.

221405743264516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1140680258 (or 1140680256 counting only the distinct ones).

The product of its (nonzero) digits is 9676800, while the sum is 52.

The spelling of 221405743264516 in words is "two hundred twenty-one trillion, four hundred five billion, seven hundred forty-three million, two hundred sixty-four thousand, five hundred sixteen".