656401336143 has 8 divisors (see below), whose sum is σ = 1000230607488. Its totient is φ = 375086477784.

The previous prime is 656401336127. The next prime is 656401336187. The reversal of 656401336143 is 341633104656.

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

It is not a de Polignac number, because 656401336143 - 2⁴ = 656401336127 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 656401336095 and 656401336104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656401336043) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 15628603221 + ... + 15628603262.

It is an arithmetic number, because the mean of its divisors is an integer number (125028825936).

Almost surely, 2^656401336143 is an apocalyptic number.

656401336143 is a deficient number, since it is larger than the sum of its proper divisors (343829271345).

656401336143 is a wasteful number, since it uses less digits than its factorization.

656401336143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31257206493.

The product of its (nonzero) digits is 466560, while the sum is 42.

The spelling of 656401336143 in words is "six hundred fifty-six billion, four hundred one million, three hundred thirty-six thousand, one hundred forty-three".