77145018 has 8 divisors (see below), whose sum is σ = 154290048. Its totient is φ = 25715004.

The previous prime is 77144999. The next prime is 77145049. The reversal of 77145018 is 81054177.

It is a sphenic number, since it is the product of 3 distinct primes.

77145018 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 77145018.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 6428746 + ... + 6428757.

It is an arithmetic number, because the mean of its divisors is an integer number (19286256).

Almost surely, 2^77145018 is an apocalyptic number.

77145018 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77145018 is a wasteful number, since it uses less digits than its factorization.

77145018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12857508.

The product of its (nonzero) digits is 7840, while the sum is 33.

The square root of 77145018 is about 8783.2236678796. The cubic root of 77145018 is about 425.6989982842.

The spelling of 77145018 in words is "seventy-seven million, one hundred forty-five thousand, eighteen".