6557066216156 has 12 divisors (see below), whose sum is σ = 11475112440960. Its totient is φ = 3278462661600.

The previous prime is 6557066216153. The next prime is 6557066216159. The reversal of 6557066216156 is 6516126607556.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (6557066216153) and next prime (6557066216159).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6557066216153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17401916 + ... + 17774723.

It is an arithmetic number, because the mean of its divisors is an integer number (956259370080).

Almost surely, 2^{6557066216156} is an apocalyptic number.

It is an amenable number.

6557066216156 is a deficient number, since it is larger than the sum of its proper divisors (4918046224804).

6557066216156 is a wasteful number, since it uses less digits than its factorization.

6557066216156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35223244 (or 35223242 counting only the distinct ones).

The product of its (nonzero) digits is 13608000, while the sum is 56.

The spelling of 6557066216156 in words is "six trillion, five hundred fifty-seven billion, sixty-six million, two hundred sixteen thousand, one hundred fifty-six".