221440716561715 has 64 divisors (see below), whose sum is σ = 308101239336960. Its totient is φ = 149646702965760.

The previous prime is 221440716561707. The next prime is 221440716561721. The reversal of 221440716561715 is 517165617044122.

It is not a de Polignac number, because 221440716561715 - 2³ = 221440716561707 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9507554220 + ... + 9507577510.

It is an arithmetic number, because the mean of its divisors is an integer number (4814081864640).

Almost surely, 2^{221440716561715} is an apocalyptic number.

221440716561715 is a deficient number, since it is larger than the sum of its proper divisors (86660522775245).

221440716561715 is a wasteful number, since it uses less digits than its factorization.

221440716561715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29572.

The product of its (nonzero) digits is 2822400, while the sum is 52.

The spelling of 221440716561715 in words is "two hundred twenty-one trillion, four hundred forty billion, seven hundred sixteen million, five hundred sixty-one thousand, seven hundred fifteen".