55510501109989 has 2 divisors, whose sum is σ = 55510501109990. Its totient is φ = 55510501109988.

The previous prime is 55510501109933. The next prime is 55510501110007. The reversal of 55510501109989 is 98990110501555.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41366636256100 + 14143864853889 = 6431690^2 + 3760833^2 .

It is a cyclic number.

It is not a de Polignac number, because 55510501109989 - 2²³ = 55510492721381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55510501179989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27755250554994 + 27755250554995.

It is an arithmetic number, because the mean of its divisors is an integer number (27755250554995).

Almost surely, 2^{55510501109989} is an apocalyptic number.

It is an amenable number.

55510501109989 is a deficient number, since it is larger than the sum of its proper divisors (1).

55510501109989 is an equidigital number, since it uses as much as digits as its factorization.

55510501109989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3645000, while the sum is 58.

The spelling of 55510501109989 in words is "fifty-five trillion, five hundred ten billion, five hundred one million, one hundred nine thousand, nine hundred eighty-nine".