268220993042 has 6 divisors (see below), whose sum is σ = 402332588199. Its totient is φ = 134110130310.

The previous prime is 268220993039. The next prime is 268220993099. The reversal of 268220993042 is 240399022862.

It can be written as a sum of positive squares in only one way, i.e., 134110496521 + 134110496521 = 366211^2 + 366211^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=366211.

It is a super-2 number, since 2×268220993042² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 549317 + ... + 915527.

Almost surely, 2^268220993042 is an apocalyptic number.

268220993042 is a deficient number, since it is larger than the sum of its proper divisors (134111595157).

268220993042 is an frugal number, since it uses more digits than its factorization.

268220993042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 732424 (or 366213 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 47.

The spelling of 268220993042 in words is "two hundred sixty-eight billion, two hundred twenty million, nine hundred ninety-three thousand, forty-two".