145121399764 has 48 divisors (see below), whose sum is σ = 277629327360. Its totient is φ = 65826510560.

The previous prime is 145121399737. The next prime is 145121399803. The reversal of 145121399764 is 467993121541.

It is a happy number.

145121399764 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, 65753949 + ... + 65756155.

It is an arithmetic number, because the mean of its divisors is an integer number (5783944320).

Almost surely, 2^145121399764 is an apocalyptic number.

It is an amenable number.

145121399764 is a deficient number, since it is larger than the sum of its proper divisors (132507927596).

145121399764 is a wasteful number, since it uses less digits than its factorization.

145121399764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4668 (or 4666 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 52.

The spelling of 145121399764 in words is "one hundred forty-five billion, one hundred twenty-one million, three hundred ninety-nine thousand, seven hundred sixty-four".