221640430372472 has 32 divisors (see below), whose sum is σ = 416964799461600. Its totient is φ = 110450160000000.

The previous prime is 221640430372363. The next prime is 221640430372477. The reversal of 221640430372472 is 274273034046122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221640430372477) 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, 16252529 + ... + 26597472.

It is an arithmetic number, because the mean of its divisors is an integer number (13030149983175).

Almost surely, 2^{221640430372472} is an apocalyptic number.

It is an amenable number.

221640430372472 is a deficient number, since it is larger than the sum of its proper divisors (195324369089128).

221640430372472 is a wasteful number, since it uses less digits than its factorization.

221640430372472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42852167 (or 42852163 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 47.

The spelling of 221640430372472 in words is "two hundred twenty-one trillion, six hundred forty billion, four hundred thirty million, three hundred seventy-two thousand, four hundred seventy-two".