67768127481 has 32 divisors (see below), whose sum is σ = 93773639680. Its totient is φ = 43498135296.

The previous prime is 67768127477. The next prime is 67768127509. The reversal of 67768127481 is 18472186776.

It is not a de Polignac number, because 67768127481 - 2² = 67768127477 is a prime.

It is a super-2 number, since 2×67768127481² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67768127281) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5590455 + ... + 5602563.

It is an arithmetic number, because the mean of its divisors is an integer number (2930426240).

Almost surely, 2^67768127481 is an apocalyptic number.

It is an amenable number.

67768127481 is a deficient number, since it is larger than the sum of its proper divisors (26005512199).

67768127481 is a wasteful number, since it uses less digits than its factorization.

67768127481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12673.

The product of its digits is 6322176, while the sum is 57.

The spelling of 67768127481 in words is "sixty-seven billion, seven hundred sixty-eight million, one hundred twenty-seven thousand, four hundred eighty-one".