108801388649 has 2 divisors, whose sum is σ = 108801388650. Its totient is φ = 108801388648.

The previous prime is 108801388637. The next prime is 108801388741. The reversal of 108801388649 is 946883108801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86580120025 + 22221268624 = 294245^2 + 149068^2 .

It is a cyclic number.

It is not a de Polignac number, because 108801388649 - 2³² = 104506421353 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 108801388594 and 108801388603.

It is not a weakly prime, because it can be changed into another prime (108801388049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54400694324 + 54400694325.

It is an arithmetic number, because the mean of its divisors is an integer number (54400694325).

Almost surely, 2^108801388649 is an apocalyptic number.

It is an amenable number.

108801388649 is a deficient number, since it is larger than the sum of its proper divisors (1).

108801388649 is an equidigital number, since it uses as much as digits as its factorization.

108801388649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2654208, while the sum is 56.

The spelling of 108801388649 in words is "one hundred eight billion, eight hundred one million, three hundred eighty-eight thousand, six hundred forty-nine".