655642745831 has 8 divisors (see below), whose sum is σ = 710354384784. Its totient is φ = 602724931200.

The previous prime is 655642745827. The next prime is 655642745839. The reversal of 655642745831 is 138547246556.

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

It is a cyclic number.

It is not a de Polignac number, because 655642745831 - 2² = 655642745827 is a prime.

It is a super-2 number, since 2×655642745831² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655642745839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 448455320 + ... + 448456781.

It is an arithmetic number, because the mean of its divisors is an integer number (88794298098).

Almost surely, 2^655642745831 is an apocalyptic number.

655642745831 is a deficient number, since it is larger than the sum of its proper divisors (54711638953).

655642745831 is a wasteful number, since it uses less digits than its factorization.

655642745831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 896912161.

The product of its digits is 24192000, while the sum is 56.

The spelling of 655642745831 in words is "six hundred fifty-five billion, six hundred forty-two million, seven hundred forty-five thousand, eight hundred thirty-one".