145344645630 has 96 divisors (see below), whose sum is σ = 384471360000. Its totient is φ = 38084769216.

The previous prime is 145344645581. The next prime is 145344645631. The reversal of 145344645630 is 36546443541.

145344645630 is a `hidden beast` number, since 1 + 4 + 5 + 3 + 4 + 4 + 6 + 4 + 5 + 630 = 666.

It is a super-2 number, since 2×145344645630² (a number of 23 digits) contains 22 as substring.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145344645631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15920127 + ... + 15929253.

It is an arithmetic number, because the mean of its divisors is an integer number (4004910000).

Almost surely, 2^145344645630 is an apocalyptic number.

145344645630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 145344645630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (192235680000).

145344645630 is an abundant number, since it is smaller than the sum of its proper divisors (239126714370).

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

145344645630 is a wasteful number, since it uses less digits than its factorization.

145344645630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12198 (or 12195 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 45.

The spelling of 145344645630 in words is "one hundred forty-five billion, three hundred forty-four million, six hundred forty-five thousand, six hundred thirty".