673229268450 has 90 divisors (see below), whose sum is σ = 1870725085779. Its totient is φ = 179513880480.

The previous prime is 673229268449. The next prime is 673229268461. The reversal of 673229268450 is 54862922376.

673229268450 is a `hidden beast` number, since 6 + 7 + 322 + 9 + 268 + 4 + 50 = 666.

It can be written as a sum of positive squares in 5 ways, for example, as 310390494129 + 362838774321 = 557127^2 + 602361^2 .

It is a tau number, because it is divible by the number of its divisors (90).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=580185.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 52210204 + ... + 52223096.

Almost surely, 2^673229268450 is an apocalyptic number.

673229268450 is an abundant number, since it is smaller than the sum of its proper divisors (1197495817329).

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

673229268450 is an frugal number, since it uses more digits than its factorization.

673229268450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25810 (or 12903 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 54.

The spelling of 673229268450 in words is "six hundred seventy-three billion, two hundred twenty-nine million, two hundred sixty-eight thousand, four hundred fifty".