656500611551 has 2 divisors, whose sum is σ = 656500611552. Its totient is φ = 656500611550.

The previous prime is 656500611539. The next prime is 656500611563. The reversal of 656500611551 is 155116005656.

It is a balanced prime because it is at equal distance from previous prime (656500611539) and next prime (656500611563).

It is a cyclic number.

It is not a de Polignac number, because 656500611551 - 2²⁶ = 656433502687 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 656500611499 and 656500611508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (656500611581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328250305775 + 328250305776.

It is an arithmetic number, because the mean of its divisors is an integer number (328250305776).

Almost surely, 2^656500611551 is an apocalyptic number.

656500611551 is a deficient number, since it is larger than the sum of its proper divisors (1).

656500611551 is an equidigital number, since it uses as much as digits as its factorization.

656500611551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 135000, while the sum is 41.

The spelling of 656500611551 in words is "six hundred fifty-six billion, five hundred million, six hundred eleven thousand, five hundred fifty-one".