55742625809 has 16 divisors (see below), whose sum is σ = 63201700800. Its totient is φ = 48737578176.

The previous prime is 55742625793. The next prime is 55742625823. The reversal of 55742625809 is 90852624755.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 55742625809 - 2⁴ = 55742625793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55742625839) 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 in 15 ways as a sum of consecutive naturals, for example, 1560422 + ... + 1595744.

It is an arithmetic number, because the mean of its divisors is an integer number (3950106300).

Almost surely, 2^55742625809 is an apocalyptic number.

It is an amenable number.

55742625809 is a deficient number, since it is larger than the sum of its proper divisors (7459074991).

55742625809 is a wasteful number, since it uses less digits than its factorization.

55742625809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41744.

The product of its (nonzero) digits is 6048000, while the sum is 53.

The spelling of 55742625809 in words is "fifty-five billion, seven hundred forty-two million, six hundred twenty-five thousand, eight hundred nine".