56640725527 has 2 divisors, whose sum is σ = 56640725528. Its totient is φ = 56640725526.

The previous prime is 56640725461. The next prime is 56640725573. The reversal of 56640725527 is 72552704665.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56640725527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56640725597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28320362763 + 28320362764.

It is an arithmetic number, because the mean of its divisors is an integer number (28320362764).

Almost surely, 2^56640725527 is an apocalyptic number.

56640725527 is a deficient number, since it is larger than the sum of its proper divisors (1).

56640725527 is an equidigital number, since it uses as much as digits as its factorization.

56640725527 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3528000, while the sum is 49.

The spelling of 56640725527 in words is "fifty-six billion, six hundred forty million, seven hundred twenty-five thousand, five hundred twenty-seven".