655540456265 has 4 divisors (see below), whose sum is σ = 786648547524. Its totient is φ = 524432365008.

The previous prime is 655540456223. The next prime is 655540456303. The reversal of 655540456265 is 562654045556.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 393985948489 + 261554507776 = 627683^2 + 511424^2 .

It is a cyclic number.

It is not a de Polignac number, because 655540456265 - 2²⁰ = 655539407689 is a prime.

It is a Duffinian 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, 65554045622 + ... + 65554045631.

It is an arithmetic number, because the mean of its divisors is an integer number (196662136881).

Almost surely, 2^655540456265 is an apocalyptic number.

It is an amenable number.

655540456265 is a deficient number, since it is larger than the sum of its proper divisors (131108091259).

655540456265 is a wasteful number, since it uses less digits than its factorization.

655540456265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131108091258.

The product of its (nonzero) digits is 21600000, while the sum is 53.

The spelling of 655540456265 in words is "six hundred fifty-five billion, five hundred forty million, four hundred fifty-six thousand, two hundred sixty-five".