145453421992 has 8 divisors (see below), whose sum is σ = 272725166250. Its totient is φ = 72726710992.

The previous prime is 145453421977. The next prime is 145453422013. The reversal of 145453421992 is 299124354541.

145453421992 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 84747360996 + 60706060996 = 291114^2 + 246386^2 .

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 9090838867 + ... + 9090838882.

Almost surely, 2^145453421992 is an apocalyptic number.

It is an amenable number.

145453421992 is a deficient number, since it is larger than the sum of its proper divisors (127271744258).

145453421992 is a wasteful number, since it uses less digits than its factorization.

145453421992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18181677755 (or 18181677751 counting only the distinct ones).

The product of its digits is 1555200, while the sum is 49.

The spelling of 145453421992 in words is "one hundred forty-five billion, four hundred fifty-three million, four hundred twenty-one thousand, nine hundred ninety-two".