6656747225157 has 12 divisors (see below), whose sum is σ = 9615358561120. Its totient is φ = 4437805169448.

The previous prime is 6656747225143. The next prime is 6656747225171. The reversal of 6656747225157 is 7515227476566.

6656747225157 is a `hidden beast` number, since 6 + 6 + 5 + 6 + 7 + 472 + 2 + 5 + 157 = 666.

It is an interprime number because it is at equal distance from previous prime (6656747225143) and next prime (6656747225171).

It is not a de Polignac number, because 6656747225157 - 2¹⁰ = 6656747224133 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6656747225094 and 6656747225103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6656747225057) 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, 523807 + ... + 3686172.

Almost surely, 2^{6656747225157} is an apocalyptic number.

It is an amenable number.

6656747225157 is a deficient number, since it is larger than the sum of its proper divisors (2958611335963).

6656747225157 is a wasteful number, since it uses less digits than its factorization.

6656747225157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4385672 (or 4385669 counting only the distinct ones).

The product of its digits is 148176000, while the sum is 63.

The spelling of 6656747225157 in words is "six trillion, six hundred fifty-six billion, seven hundred forty-seven million, two hundred twenty-five thousand, one hundred fifty-seven".