145187395578 has 48 divisors (see below), whose sum is σ = 336510818280. Its totient is φ = 45079400448.

The previous prime is 145187395571. The next prime is 145187395583. The reversal of 145187395578 is 875593781541.

It is a happy number.

145187395578 is a `hidden beast` number, since 1 + 4 + 5 + 1 + 8 + 73 + 9 + 557 + 8 = 666.

145187395578 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 144747528849 + 439866729 = 380457^2 + 20973^2 .

It is not an unprimeable number, because it can be changed into a prime (145187395571) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2416033 + ... + 2475396.

Almost surely, 2^145187395578 is an apocalyptic number.

145187395578 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

145187395578 is an abundant number, since it is smaller than the sum of its proper divisors (191323422702).

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

145187395578 is a wasteful number, since it uses less digits than its factorization.

145187395578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4891551 (or 4891548 counting only the distinct ones).

The product of its digits is 42336000, while the sum is 63.

It can be divided in two parts, 1451873 and 95578, that added together give a palindrome (1547451).

The spelling of 145187395578 in words is "one hundred forty-five billion, one hundred eighty-seven million, three hundred ninety-five thousand, five hundred seventy-eight".