56747547499109 has 2 divisors, whose sum is σ = 56747547499110. Its totient is φ = 56747547499108.

The previous prime is 56747547499099. The next prime is 56747547499147. The reversal of 56747547499109 is 90199474574765.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46280400820900 + 10467146678209 = 6802970^2 + 3235297^2 .

It is a cyclic number.

It is not a de Polignac number, because 56747547499109 - 2²⁰ = 56747546450533 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56747547499109.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56747543499109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28373773749554 + 28373773749555.

It is an arithmetic number, because the mean of its divisors is an integer number (28373773749555).

Almost surely, 2^{56747547499109} is an apocalyptic number.

It is an amenable number.

56747547499109 is a deficient number, since it is larger than the sum of its proper divisors (1).

56747547499109 is an equidigital number, since it uses as much as digits as its factorization.

56747547499109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2400451200, while the sum is 77.

The spelling of 56747547499109 in words is "fifty-six trillion, seven hundred forty-seven billion, five hundred forty-seven million, four hundred ninety-nine thousand, one hundred nine".