68777159445 has 24 divisors (see below), whose sum is σ = 120722784000. Its totient is φ = 36216831456.

The previous prime is 68777159441. The next prime is 68777159449. The reversal of 68777159445 is 54495177786.

68777159445 is a `hidden beast` number, since 6 + 8 + 77 + 71 + 59 + 445 = 666.

It is an interprime number because it is at equal distance from previous prime (68777159441) and next prime (68777159449).

It is not a de Polignac number, because 68777159445 - 2² = 68777159441 is a prime.

It is a super-2 number, since 2×68777159445² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68777159441) 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 in 23 ways as a sum of consecutive naturals, for example, 9669745 + ... + 9676854.

It is an arithmetic number, because the mean of its divisors is an integer number (5030116000).

Almost surely, 2^68777159445 is an apocalyptic number.

It is an amenable number.

68777159445 is a deficient number, since it is larger than the sum of its proper divisors (51945624555).

68777159445 is a wasteful number, since it uses less digits than its factorization.

68777159445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19346689 (or 19346686 counting only the distinct ones).

The product of its digits is 59270400, while the sum is 63.

The spelling of 68777159445 in words is "sixty-eight billion, seven hundred seventy-seven million, one hundred fifty-nine thousand, four hundred forty-five".