145440235400 has 48 divisors (see below), whose sum is σ = 339000491940. Its totient is φ = 58029523200.

The previous prime is 145440235379. The next prime is 145440235471. The reversal of 145440235400 is 4532044541.

It can be written as a sum of positive squares in 6 ways, for example, as 72071845444 + 73368389956 = 268462^2 + 270866^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 836471 + ... + 995270.

Almost surely, 2^145440235400 is an apocalyptic number.

145440235400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145440235400 is an abundant number, since it is smaller than the sum of its proper divisors (193560256540).

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

145440235400 is a wasteful number, since it uses less digits than its factorization.

145440235400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1832154 (or 1832145 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 32.

Adding to 145440235400 its reverse (4532044541), we get a palindrome (149972279941).

The spelling of 145440235400 in words is "one hundred forty-five billion, four hundred forty million, two hundred thirty-five thousand, four hundred".