221762472842 has 16 divisors (see below), whose sum is σ = 343538340480. Its totient is φ = 107302708128.

The previous prime is 221762472817. The next prime is 221762472847. The reversal of 221762472842 is 248274267122.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is not an unprimeable number, because it can be changed into a prime (221762472847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13245428 + ... + 13262159.

It is an arithmetic number, because the mean of its divisors is an integer number (21471146280).

Almost surely, 2^221762472842 is an apocalyptic number.

221762472842 is a deficient number, since it is larger than the sum of its proper divisors (121775867638).

221762472842 is a wasteful number, since it uses less digits than its factorization.

221762472842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26507725.

The product of its digits is 1204224, while the sum is 47.

The spelling of 221762472842 in words is "two hundred twenty-one billion, seven hundred sixty-two million, four hundred seventy-two thousand, eight hundred forty-two".