655522971291 has 12 divisors (see below), whose sum is σ = 948479582232. Its totient is φ = 436270821216.

The previous prime is 655522971287. The next prime is 655522971347. The reversal of 655522971291 is 192179225556.

655522971291 is a `hidden beast` number, since 6 + 5 + 5 + 522 + 97 + 1 + 29 + 1 = 666.

655522971291 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 655522971291 - 2² = 655522971287 is a prime.

It is not an unprimeable number, because it can be changed into a prime (655522971221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62035506 + ... + 62046071.

It is an arithmetic number, because the mean of its divisors is an integer number (79039965186).

Almost surely, 2^655522971291 is an apocalyptic number.

655522971291 is a deficient number, since it is larger than the sum of its proper divisors (292956610941).

655522971291 is a wasteful number, since it uses less digits than its factorization.

655522971291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124082170 (or 124082167 counting only the distinct ones).

The product of its digits is 3402000, while the sum is 54.

The spelling of 655522971291 in words is "six hundred fifty-five billion, five hundred twenty-two million, nine hundred seventy-one thousand, two hundred ninety-one".