221595750464 has 56 divisors (see below), whose sum is σ = 479765490048. Its totient is φ = 100712522240.

The previous prime is 221595750451. The next prime is 221595750479. The reversal of 221595750464 is 464057595122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7541369 + ... + 7570695.

Almost surely, 2^221595750464 is an apocalyptic number.

It is an amenable number.

221595750464 is an abundant number, since it is smaller than the sum of its proper divisors (258169739584).

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

221595750464 is a wasteful number, since it uses less digits than its factorization.

221595750464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40083 (or 40073 counting only the distinct ones).

The product of its (nonzero) digits is 3024000, while the sum is 50.

The spelling of 221595750464 in words is "two hundred twenty-one billion, five hundred ninety-five million, seven hundred fifty thousand, four hundred sixty-four".