672821829603 has 72 divisors (see below), whose sum is σ = 1233914812416. Its totient is φ = 349343215200.

The previous prime is 672821829569. The next prime is 672821829643. The reversal of 672821829603 is 306928128276.

672821829603 is a `hidden beast` number, since 6 + 7 + 2 + 8 + 2 + 1 + 8 + 29 + 603 = 666.

It is not a de Polignac number, because 672821829603 - 2¹⁷ = 672821698531 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 672821829603.

It is not an unprimeable number, because it can be changed into a prime (672821829643) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 9973998 + ... + 10041228.

It is an arithmetic number, because the mean of its divisors is an integer number (17137705728).

Almost surely, 2^672821829603 is an apocalyptic number.

672821829603 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

672821829603 is a deficient number, since it is larger than the sum of its proper divisors (561092982813).

672821829603 is a wasteful number, since it uses less digits than its factorization.

672821829603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69325 (or 69315 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 54.

The spelling of 672821829603 in words is "six hundred seventy-two billion, eight hundred twenty-one million, eight hundred twenty-nine thousand, six hundred three".