145649318400 has 960 divisors, whose sum is σ = 577531785600. Its totient is φ = 35831808000.

The previous prime is 145649318387. The next prime is 145649318401. The reversal of 145649318400 is 4813946541.

145649318400 is a `hidden beast` number, since 1 + 4 + 564 + 9 + 3 + 1 + 84 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (960).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145649318401) by changing a digit.

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 95 ways as a sum of consecutive naturals, for example, 269222130 + ... + 269222670.

It is an arithmetic number, because the mean of its divisors is an integer number (601595610).

Almost surely, 2^145649318400 is an apocalyptic number.

145649318400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145649318400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (288765892800).

145649318400 is an abundant number, since it is smaller than the sum of its proper divisors (431882467200).

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

145649318400 is a wasteful number, since it uses less digits than its factorization.

145649318400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638 (or 611 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The spelling of 145649318400 in words is "one hundred forty-five billion, six hundred forty-nine million, three hundred eighteen thousand, four hundred".