768621242181 has 16 divisors (see below), whose sum is σ = 1107955687104. Its totient is φ = 471157223424.

The previous prime is 768621242167. The next prime is 768621242183. The reversal of 768621242181 is 181242126867.

It is a happy number.

It is not a de Polignac number, because 768621242181 - 2⁵ = 768621242149 is a prime.

It is a super-2 number, since 2×768621242181² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 768621242181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (768621242183) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38332851 + ... + 38352896.

It is an arithmetic number, because the mean of its divisors is an integer number (69247230444).

Almost surely, 2^768621242181 is an apocalyptic number.

It is an amenable number.

768621242181 is a deficient number, since it is larger than the sum of its proper divisors (339334444923).

768621242181 is a wasteful number, since it uses less digits than its factorization.

768621242181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76686020.

The product of its digits is 516096, while the sum is 48.

The spelling of 768621242181 in words is "seven hundred sixty-eight billion, six hundred twenty-one million, two hundred forty-two thousand, one hundred eighty-one".