109547987077 has 2 divisors, whose sum is σ = 109547987078. Its totient is φ = 109547987076.

The previous prime is 109547987071. The next prime is 109547987231. The reversal of 109547987077 is 770789745901.

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., 109543788676 + 4198401 = 330974^2 + 2049^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-109547987077 is a prime.

It is a super-2 number, since 2×109547987077² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109547987071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54773993538 + 54773993539.

It is an arithmetic number, because the mean of its divisors is an integer number (54773993539).

Almost surely, 2^109547987077 is an apocalyptic number.

It is an amenable number.

109547987077 is a deficient number, since it is larger than the sum of its proper divisors (1).

109547987077 is an equidigital number, since it uses as much as digits as its factorization.

109547987077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31116960, while the sum is 64.

The spelling of 109547987077 in words is "one hundred nine billion, five hundred forty-seven million, nine hundred eighty-seven thousand, seventy-seven".