5971555656 has 64 divisors (see below), whose sum is σ = 18095630400. Its totient is φ = 1809561600.

The previous prime is 5971555651. The next prime is 5971555669. The reversal of 5971555656 is 6565551795.

5971555656 is a `hidden beast` number, since 5 + 9 + 71 + 5 + 5 + 565 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (5971555651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1254265 + ... + 1259016.

It is an arithmetic number, because the mean of its divisors is an integer number (282744225).

Almost surely, 2^5971555656 is an apocalyptic number.

It is an amenable number.

5971555656 is an abundant number, since it is smaller than the sum of its proper divisors (12124074744).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5971555656 is a wasteful number, since it uses less digits than its factorization.

5971555656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2513307 (or 2513297 counting only the distinct ones).

The product of its digits is 7087500, while the sum is 54.

The square root of 5971555656 is about 77275.8413477330. The cubic root of 5971555656 is about 1814.2445541291.

The spelling of 5971555656 in words is "five billion, nine hundred seventy-one million, five hundred fifty-five thousand, six hundred fifty-six".