68978571441 has 16 divisors (see below), whose sum is σ = 102461540160. Its totient is φ = 40984614720.

The previous prime is 68978571373. The next prime is 68978571449. The reversal of 68978571441 is 14417587986.

It is not a de Polignac number, because 68978571441 - 2²² = 68974377137 is a prime.

It is a super-2 number, since 2×68978571441² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68978571449) 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 15 ways as a sum of consecutive naturals, for example, 30493375 + ... + 30495636.

It is an arithmetic number, because the mean of its divisors is an integer number (6403846260).

Almost surely, 2^68978571441 is an apocalyptic number.

It is an amenable number.

68978571441 is a deficient number, since it is larger than the sum of its proper divisors (33482968719).

68978571441 is a wasteful number, since it uses less digits than its factorization.

68978571441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60989056.

The product of its digits is 13547520, while the sum is 60.

The spelling of 68978571441 in words is "sixty-eight billion, nine hundred seventy-eight million, five hundred seventy-one thousand, four hundred forty-one".