6155655556 has 6 divisors (see below), whose sum is σ = 10772397230. Its totient is φ = 3077827776.

The previous prime is 6155655551. The next prime is 6155655557. The reversal of 6155655556 is 6555565516.

It can be written as a sum of positive squares in only one way, i.e., 3418273156 + 2737382400 = 58466^2 + 52320^2 .

It is a super-2 number, since 2×6155655556² = 75784190648227338272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6155655551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 769456941 + ... + 769456948.

Almost surely, 2^6155655556 is an apocalyptic number.

It is an amenable number.

6155655556 is a deficient number, since it is larger than the sum of its proper divisors (4616741674).

6155655556 is a wasteful number, since it uses less digits than its factorization.

6155655556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1538913893 (or 1538913891 counting only the distinct ones).

The product of its digits is 3375000, while the sum is 49.

The square root of 6155655556 is about 78457.9859287759. The cubic root of 6155655556 is about 1832.7002405844.

The spelling of 6155655556 in words is "six billion, one hundred fifty-five million, six hundred fifty-five thousand, five hundred fifty-six".