673535291538 has 8 divisors (see below), whose sum is σ = 1347070583088. Its totient is φ = 224511763844.

The previous prime is 673535291509. The next prime is 673535291579. The reversal of 673535291538 is 835192535376.

It is a sphenic number, since it is the product of 3 distinct primes.

673535291538 is an admirable number.

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 in 3 ways as a sum of consecutive naturals, for example, 56127940956 + ... + 56127940967.

It is an arithmetic number, because the mean of its divisors is an integer number (168383822886).

Almost surely, 2^673535291538 is an apocalyptic number.

673535291538 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

673535291538 is a wasteful number, since it uses less digits than its factorization.

673535291538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112255881928.

The product of its digits is 20412000, while the sum is 57.

The spelling of 673535291538 in words is "six hundred seventy-three billion, five hundred thirty-five million, two hundred ninety-one thousand, five hundred thirty-eight".