68077188823 has 18 divisors (see below), whose sum is σ = 82662581768. Its totient is φ = 54909945600.

The previous prime is 68077188821. The next prime is 68077188913. The reversal of 68077188823 is 32888177086.

It is a happy number.

It is not a de Polignac number, because 68077188823 - 2¹ = 68077188821 is a prime.

It is a super-2 number, since 2×68077188823² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68077188821) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 11732523 + ... + 11738323.

Almost surely, 2^68077188823 is an apocalyptic number.

68077188823 is a deficient number, since it is larger than the sum of its proper divisors (14585392945).

68077188823 is an frugal number, since it uses more digits than its factorization.

68077188823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11643 (or 5825 counting only the distinct ones).

The product of its (nonzero) digits is 7225344, while the sum is 58.

The spelling of 68077188823 in words is "sixty-eight billion, seventy-seven million, one hundred eighty-eight thousand, eight hundred twenty-three".