656940700079 has 2 divisors, whose sum is σ = 656940700080. Its totient is φ = 656940700078.

The previous prime is 656940700037. The next prime is 656940700121. The reversal of 656940700079 is 970007049656.

It is a balanced prime because it is at equal distance from previous prime (656940700037) and next prime (656940700121).

It is a cyclic number.

It is not a de Polignac number, because 656940700079 - 2¹⁶ = 656940634543 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 656940700079.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (656940700379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328470350039 + 328470350040.

It is an arithmetic number, because the mean of its divisors is an integer number (328470350040).

Almost surely, 2^656940700079 is an apocalyptic number.

656940700079 is a deficient number, since it is larger than the sum of its proper divisors (1).

656940700079 is an equidigital number, since it uses as much as digits as its factorization.

656940700079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2857680, while the sum is 53.

The spelling of 656940700079 in words is "six hundred fifty-six billion, nine hundred forty million, seven hundred thousand, seventy-nine".