145778890009 has 8 divisors (see below), whose sum is σ = 152948345600. Its totient is φ = 138763616400.

The previous prime is 145778889989. The next prime is 145778890067. The reversal of 145778890009 is 900098877541.

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

It is a cyclic number.

It is not a de Polignac number, because 145778890009 - 2⁷ = 145778889881 is a prime.

It is a super-2 number, since 2×145778890009² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145778893009) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 38543559 + ... + 38547340.

It is an arithmetic number, because the mean of its divisors is an integer number (19118543200).

Almost surely, 2^145778890009 is an apocalyptic number.

It is an amenable number.

145778890009 is a deficient number, since it is larger than the sum of its proper divisors (7169455591).

145778890009 is an equidigital number, since it uses as much as digits as its factorization.

145778890009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77090991.

The product of its (nonzero) digits is 5080320, while the sum is 58.

The spelling of 145778890009 in words is "one hundred forty-five billion, seven hundred seventy-eight million, eight hundred ninety thousand, nine".