656556115547 has 2 divisors, whose sum is σ = 656556115548. Its totient is φ = 656556115546.

The previous prime is 656556115477. The next prime is 656556115559. The reversal of 656556115547 is 745511655656.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 656556115547 - 2²⁶ = 656489006683 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 656556115492 and 656556115501.

It is not a weakly prime, because it can be changed into another prime (656556115147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328278057773 + 328278057774.

It is an arithmetic number, because the mean of its divisors is an integer number (328278057774).

Almost surely, 2^656556115547 is an apocalyptic number.

656556115547 is a deficient number, since it is larger than the sum of its proper divisors (1).

656556115547 is an equidigital number, since it uses as much as digits as its factorization.

656556115547 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18900000, while the sum is 56.

The spelling of 656556115547 in words is "six hundred fifty-six billion, five hundred fifty-six million, one hundred fifteen thousand, five hundred forty-seven".