451165772028 has 96 divisors (see below), whose sum is σ = 1077998987520. Its totient is φ = 146814796800.

The previous prime is 451165772027. The next prime is 451165772039. The reversal of 451165772028 is 820277561154.

451165772028 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (451165772027) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 147101751 + ... + 147104817.

It is an arithmetic number, because the mean of its divisors is an integer number (11229156120).

Almost surely, 2^451165772028 is an apocalyptic number.

It is an amenable number.

451165772028 is an abundant number, since it is smaller than the sum of its proper divisors (626833215492).

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

451165772028 is a wasteful number, since it uses less digits than its factorization.

451165772028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4507 (or 4505 counting only the distinct ones).

The product of its (nonzero) digits is 940800, while the sum is 48.

The spelling of 451165772028 in words is "four hundred fifty-one billion, one hundred sixty-five million, seven hundred seventy-two thousand, twenty-eight".