145040865820 has 48 divisors (see below), whose sum is σ = 320650243200. Its totient is φ = 54957096000.

The previous prime is 145040865791. The next prime is 145040865841. The reversal of 145040865820 is 28568040541.

145040865820 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5968695 + ... + 5992945.

It is an arithmetic number, because the mean of its divisors is an integer number (6680213400).

Almost surely, 2^145040865820 is an apocalyptic number.

145040865820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145040865820 is an abundant number, since it is smaller than the sum of its proper divisors (175609377380).

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

145040865820 is a wasteful number, since it uses less digits than its factorization.

145040865820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40018 (or 40016 counting only the distinct ones).

The product of its (nonzero) digits is 307200, while the sum is 43.

The spelling of 145040865820 in words is "one hundred forty-five billion, forty million, eight hundred sixty-five thousand, eight hundred twenty".