88435220561 has 2 divisors, whose sum is σ = 88435220562. Its totient is φ = 88435220560.

The previous prime is 88435220557. The next prime is 88435220611. The reversal of 88435220561 is 16502253488.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80519737600 + 7915482961 = 283760^2 + 88969^2 .

It is a cyclic number.

It is not a de Polignac number, because 88435220561 - 2² = 88435220557 is a prime.

It is not a weakly prime, because it can be changed into another prime (88435220261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44217610280 + 44217610281.

It is an arithmetic number, because the mean of its divisors is an integer number (44217610281).

Almost surely, 2^88435220561 is an apocalyptic number.

It is an amenable number.

88435220561 is a deficient number, since it is larger than the sum of its proper divisors (1).

88435220561 is an equidigital number, since it uses as much as digits as its factorization.

88435220561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 460800, while the sum is 44.

The spelling of 88435220561 in words is "eighty-eight billion, four hundred thirty-five million, two hundred twenty thousand, five hundred sixty-one".