145278240784 has 80 divisors (see below), whose sum is σ = 295237103616. Its totient is φ = 69165993600.

The previous prime is 145278240769. The next prime is 145278240853. The reversal of 145278240784 is 487042872541.

It is a super-2 number, since 2×145278240784² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36254109 + ... + 36258115.

Almost surely, 2^145278240784 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145278240784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147618551808).

145278240784 is an abundant number, since it is smaller than the sum of its proper divisors (149958862832).

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

145278240784 is a wasteful number, since it uses less digits than its factorization.

145278240784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5204 (or 5198 counting only the distinct ones).

The product of its (nonzero) digits is 4014080, while the sum is 52.

The spelling of 145278240784 in words is "one hundred forty-five billion, two hundred seventy-eight million, two hundred forty thousand, seven hundred eighty-four".