332221718978 has 6 divisors (see below), whose sum is σ = 498333801171. Its totient is φ = 166110451922.

The previous prime is 332221718977. The next prime is 332221718981. The reversal of 332221718978 is 879817122233.

It can be written as a sum of positive squares in only one way, i.e., 166110859489 + 166110859489 = 407567^2 + 407567^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=407567.

It is a super-2 number, since 2×332221718978² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (332221718977) 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 2 ways as a sum of consecutive naturals, for example, 611351 + ... + 1018917.

Almost surely, 2^332221718978 is an apocalyptic number.

332221718978 is a deficient number, since it is larger than the sum of its proper divisors (166112082193).

332221718978 is an frugal number, since it uses more digits than its factorization.

332221718978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 815136 (or 407569 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 53.

The spelling of 332221718978 in words is "three hundred thirty-two billion, two hundred twenty-one million, seven hundred eighteen thousand, nine hundred seventy-eight".