145134431540 has 24 divisors (see below), whose sum is σ = 348322636032. Its totient is φ = 49760376480.

The previous prime is 145134431531. The next prime is 145134431543. The reversal of 145134431540 is 45134431541.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 145134431540.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145134431543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 518337116 + ... + 518337395.

It is an arithmetic number, because the mean of its divisors is an integer number (14513443168).

Almost surely, 2^145134431540 is an apocalyptic number.

145134431540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145134431540 is an abundant number, since it is smaller than the sum of its proper divisors (203188204492).

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

145134431540 is a wasteful number, since it uses less digits than its factorization.

145134431540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1036674527 (or 1036674525 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 35.

Subtracting from 145134431540 its reverse (45134431541), we obtain a palindrome (99999999999).

The spelling of 145134431540 in words is "one hundred forty-five billion, one hundred thirty-four million, four hundred thirty-one thousand, five hundred forty".