102556651601 has 2 divisors, whose sum is σ = 102556651602. Its totient is φ = 102556651600.

The previous prime is 102556651579. The next prime is 102556651643. The reversal of 102556651601 is 106156655201.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 92811013201 + 9745638400 = 304649^2 + 98720^2 .

It is a cyclic number.

It is not a de Polignac number, because 102556651601 - 2¹⁸ = 102556389457 is a prime.

It is not a weakly prime, because it can be changed into another prime (102556671601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51278325800 + 51278325801.

It is an arithmetic number, because the mean of its divisors is an integer number (51278325801).

Almost surely, 2^102556651601 is an apocalyptic number.

It is an amenable number.

102556651601 is a deficient number, since it is larger than the sum of its proper divisors (1).

102556651601 is an equidigital number, since it uses as much as digits as its factorization.

102556651601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54000, while the sum is 38.

The spelling of 102556651601 in words is "one hundred two billion, five hundred fifty-six million, six hundred fifty-one thousand, six hundred one".