656404134134 has 16 divisors (see below), whose sum is σ = 1128813967008. Its totient is φ = 280428623232.

The previous prime is 656404134131. The next prime is 656404134167. The reversal of 656404134134 is 431431404656.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 656404134091 and 656404134100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656404134131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73948259 + ... + 73957134.

It is an arithmetic number, because the mean of its divisors is an integer number (70550872938).

Almost surely, 2^656404134134 is an apocalyptic number.

656404134134 is a deficient number, since it is larger than the sum of its proper divisors (472409832874).

656404134134 is a wasteful number, since it uses less digits than its factorization.

656404134134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147905719.

The product of its (nonzero) digits is 414720, while the sum is 41.

The spelling of 656404134134 in words is "six hundred fifty-six billion, four hundred four million, one hundred thirty-four thousand, one hundred thirty-four".