55430944729 has 2 divisors, whose sum is σ = 55430944730. Its totient is φ = 55430944728.

The previous prime is 55430944697. The next prime is 55430944759. The reversal of 55430944729 is 92744903455.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53444192400 + 1986752329 = 231180^2 + 44573^2 .

It is a cyclic number.

It is not a de Polignac number, because 55430944729 - 2⁵ = 55430944697 is a prime.

It is not a weakly prime, because it can be changed into another prime (55430944759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27715472364 + 27715472365.

It is an arithmetic number, because the mean of its divisors is an integer number (27715472365).

Almost surely, 2^55430944729 is an apocalyptic number.

It is an amenable number.

55430944729 is a deficient number, since it is larger than the sum of its proper divisors (1).

55430944729 is an equidigital number, since it uses as much as digits as its factorization.

55430944729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5443200, while the sum is 52.

The spelling of 55430944729 in words is "fifty-five billion, four hundred thirty million, nine hundred forty-four thousand, seven hundred twenty-nine".