55207539689 has 2 divisors, whose sum is σ = 55207539690. Its totient is φ = 55207539688.

The previous prime is 55207539683. The next prime is 55207539697. The reversal of 55207539689 is 98693570255.

55207539689 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28276104025 + 26931435664 = 168155^2 + 164108^2 .

It is a cyclic number.

It is not a de Polignac number, because 55207539689 - 2⁸ = 55207539433 is a prime.

It is not a weakly prime, because it can be changed into another prime (55207539683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27603769844 + 27603769845.

It is an arithmetic number, because the mean of its divisors is an integer number (27603769845).

Almost surely, 2^55207539689 is an apocalyptic number.

It is an amenable number.

55207539689 is a deficient number, since it is larger than the sum of its proper divisors (1).

55207539689 is an equidigital number, since it uses as much as digits as its factorization.

55207539689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20412000, while the sum is 59.

The spelling of 55207539689 in words is "fifty-five billion, two hundred seven million, five hundred thirty-nine thousand, six hundred eighty-nine".