655729981238 has 8 divisors (see below), whose sum is σ = 984982272960. Its totient is φ = 327402556920.

The previous prime is 655729981219. The next prime is 655729981243. The reversal of 655729981238 is 832189927556.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 231215078 + ... + 231217913.

It is an arithmetic number, because the mean of its divisors is an integer number (123122784120).

Almost surely, 2^655729981238 is an apocalyptic number.

655729981238 is a deficient number, since it is larger than the sum of its proper divisors (329252291722).

655729981238 is a wasteful number, since it uses less digits than its factorization.

655729981238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462433702.

The product of its digits is 65318400, while the sum is 65.

The spelling of 655729981238 in words is "six hundred fifty-five billion, seven hundred twenty-nine million, nine hundred eighty-one thousand, two hundred thirty-eight".