221534461470730 has 8 divisors (see below), whose sum is σ = 398762030647332. Its totient is φ = 88613784588288.

The previous prime is 221534461470713. The next prime is 221534461470733. The reversal of 221534461470730 is 37074164435122.

It can be written as a sum of positive squares in 2 ways, for example, as 211551585204969 + 9982876265761 = 14544813^2 + 3159569^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (221534461470733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11076723073527 + ... + 11076723073546.

Almost surely, 2^{221534461470730} is an apocalyptic number.

221534461470730 is a deficient number, since it is larger than the sum of its proper divisors (177227569176602).

221534461470730 is a wasteful number, since it uses less digits than its factorization.

221534461470730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22153446147080.

The product of its (nonzero) digits is 3386880, while the sum is 49.

The spelling of 221534461470730 in words is "two hundred twenty-one trillion, five hundred thirty-four billion, four hundred sixty-one million, four hundred seventy thousand, seven hundred thirty".