656454125051 has 2 divisors, whose sum is σ = 656454125052. Its totient is φ = 656454125050.

The previous prime is 656454125039. The next prime is 656454125059. The reversal of 656454125051 is 150521454656.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-656454125051 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 656454124993 and 656454125011.

It is not a weakly prime, because it can be changed into another prime (656454125059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328227062525 + 328227062526.

It is an arithmetic number, because the mean of its divisors is an integer number (328227062526).

Almost surely, 2^656454125051 is an apocalyptic number.

656454125051 is a deficient number, since it is larger than the sum of its proper divisors (1).

656454125051 is an equidigital number, since it uses as much as digits as its factorization.

656454125051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720000, while the sum is 44.

The spelling of 656454125051 in words is "six hundred fifty-six billion, four hundred fifty-four million, one hundred twenty-five thousand, fifty-one".