77044454746018 has 16 divisors (see below), whose sum is σ = 121650820165440. Its totient is φ = 36494237394000.

The previous prime is 77044454746013. The next prime is 77044454746033. The reversal of 77044454746018 is 81064745444077.

It is a super-2 number, since 2×77044454746018² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (77044454746013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11215893 + ... + 16729768.

It is an arithmetic number, because the mean of its divisors is an integer number (7603176260340).

Almost surely, 2^{77044454746018} is an apocalyptic number.

77044454746018 is a deficient number, since it is larger than the sum of its proper divisors (44606365419422).

77044454746018 is a wasteful number, since it uses less digits than its factorization.

77044454746018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28018233.

The product of its (nonzero) digits is 84295680, while the sum is 61.

The spelling of 77044454746018 in words is "seventy-seven trillion, forty-four billion, four hundred fifty-four million, seven hundred forty-six thousand, eighteen".