144320957515818 has 64 divisors (see below), whose sum is σ = 320899204483200. Its totient is φ = 48079093795200.

The previous prime is 144320957515783. The next prime is 144320957515957. The reversal of 144320957515818 is 818515759023441.

144320957515818 is a `hidden beast` number, since 1 + 4 + 4 + 3 + 2 + 0 + 9 + 575 + 1 + 58 + 1 + 8 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3384378405 + ... + 3384421047.

It is an arithmetic number, because the mean of its divisors is an integer number (5014050070050).

Almost surely, 2^{144320957515818} is an apocalyptic number.

144320957515818 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

144320957515818 is an abundant number, since it is smaller than the sum of its proper divisors (176578246967382).

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

144320957515818 is a wasteful number, since it uses less digits than its factorization.

144320957515818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77524 (or 77518 counting only the distinct ones).

The product of its (nonzero) digits is 48384000, while the sum is 63.

The spelling of 144320957515818 in words is "one hundred forty-four trillion, three hundred twenty billion, nine hundred fifty-seven million, five hundred fifteen thousand, eight hundred eighteen".