655546260505 has 4 divisors (see below), whose sum is σ = 786655512612. Its totient is φ = 524437008400.

The previous prime is 655546260449. The next prime is 655546260541. The reversal of 655546260505 is 505062645556.

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 484289336281 + 171256924224 = 695909^2 + 413832^2 .

It is not a de Polignac number, because 655546260505 - 2⁷ = 655546260377 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, 65554626046 + ... + 65554626055.

It is an arithmetic number, because the mean of its divisors is an integer number (196663878153).

Almost surely, 2^655546260505 is an apocalyptic number.

It is an amenable number.

655546260505 is a deficient number, since it is larger than the sum of its proper divisors (131109252107).

655546260505 is a wasteful number, since it uses less digits than its factorization.

655546260505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131109252106.

The product of its (nonzero) digits is 5400000, while the sum is 49.

The spelling of 655546260505 in words is "six hundred fifty-five billion, five hundred forty-six million, two hundred sixty thousand, five hundred five".