56149490069 has 2 divisors, whose sum is σ = 56149490070. Its totient is φ = 56149490068.

The previous prime is 56149490053. The next prime is 56149490101. The reversal of 56149490069 is 96009494165.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28447882225 + 27701607844 = 168665^2 + 166438^2 .

It is a cyclic number.

It is not a de Polignac number, because 56149490069 - 2⁴ = 56149490053 is a prime.

It is a super-3 number, since 3×56149490069³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 56149490069.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56149490039) 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, 28074745034 + 28074745035.

It is an arithmetic number, because the mean of its divisors is an integer number (28074745035).

Almost surely, 2^56149490069 is an apocalyptic number.

It is an amenable number.

56149490069 is a deficient number, since it is larger than the sum of its proper divisors (1).

56149490069 is an equidigital number, since it uses as much as digits as its factorization.

56149490069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2099520, while the sum is 53.

The spelling of 56149490069 in words is "fifty-six billion, one hundred forty-nine million, four hundred ninety thousand, sixty-nine".