673509208995 has 96 divisors (see below), whose sum is σ = 1412530329600. Its totient is φ = 289998703872.

The previous prime is 673509208993. The next prime is 673509208997. The reversal of 673509208995 is 599802905376.

673509208995 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (673509208993) and next prime (673509208997).

It is not a de Polignac number, because 673509208995 - 2¹ = 673509208993 is a prime.

It is a super-2 number, since 2×673509208995² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (673509208993) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 710166 + ... + 1360644.

It is an arithmetic number, because the mean of its divisors is an integer number (14713857600).

Almost surely, 2^673509208995 is an apocalyptic number.

673509208995 is an abundant number, since it is smaller than the sum of its proper divisors (739021120605).

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

673509208995 is a wasteful number, since it uses less digits than its factorization.

673509208995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 650689 (or 650686 counting only the distinct ones).

The product of its (nonzero) digits is 36741600, while the sum is 63.

The spelling of 673509208995 in words is "six hundred seventy-three billion, five hundred nine million, two hundred eight thousand, nine hundred ninety-five".