55630858709 has 2 divisors, whose sum is σ = 55630858710. Its totient is φ = 55630858708.

The previous prime is 55630858693. The next prime is 55630858741. The reversal of 55630858709 is 90785803655.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51706212100 + 3924646609 = 227390^2 + 62647^2 .

It is a cyclic number.

It is not a de Polignac number, because 55630858709 - 2⁴ = 55630858693 is a prime.

It is a super-2 number, since 2×55630858709² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55630852709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27815429354 + 27815429355.

It is an arithmetic number, because the mean of its divisors is an integer number (27815429355).

Almost surely, 2^55630858709 is an apocalyptic number.

It is an amenable number.

55630858709 is a deficient number, since it is larger than the sum of its proper divisors (1).

55630858709 is an equidigital number, since it uses as much as digits as its factorization.

55630858709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072000, while the sum is 56.

The spelling of 55630858709 in words is "fifty-five billion, six hundred thirty million, eight hundred fifty-eight thousand, seven hundred nine".