145121809316 has 72 divisors (see below), whose sum is σ = 293990286240. Its totient is φ = 62461048320.

The previous prime is 145121809307. The next prime is 145121809351. The reversal of 145121809316 is 613908121541.

It is a happy number.

145121809316 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 23 ways as a sum of consecutive naturals, for example, 33259751 + ... + 33264113.

It is an arithmetic number, because the mean of its divisors is an integer number (4083198420).

Almost surely, 2^145121809316 is an apocalyptic number.

It is an amenable number.

145121809316 is an abundant number, since it is smaller than the sum of its proper divisors (148868476924).

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

145121809316 is a wasteful number, since it uses less digits than its factorization.

145121809316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8025 (or 8012 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 41.

The spelling of 145121809316 in words is "one hundred forty-five billion, one hundred twenty-one million, eight hundred nine thousand, three hundred sixteen".