68888543954 has 4 divisors (see below), whose sum is σ = 103332815934. Its totient is φ = 34444271976.

The previous prime is 68888543953. The next prime is 68888543959. The reversal of 68888543954 is 45934588886.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 59763136225 + 9125407729 = 244465^2 + 95527^2 .

It is a super-3 number, since 3×68888543954³ (a number of 33 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (68888543953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17222135987 + ... + 17222135990.

Almost surely, 2^68888543954 is an apocalyptic number.

68888543954 is a deficient number, since it is larger than the sum of its proper divisors (34444271980).

68888543954 is a wasteful number, since it uses less digits than its factorization.

68888543954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34444271979.

The product of its digits is 265420800, while the sum is 68.

The spelling of 68888543954 in words is "sixty-eight billion, eight hundred eighty-eight million, five hundred forty-three thousand, nine hundred fifty-four".