55966917901 has 2 divisors, whose sum is σ = 55966917902. Its totient is φ = 55966917900.

The previous prime is 55966917893. The next prime is 55966917907. The reversal of 55966917901 is 10971966955.

55966917901 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36109880676 + 19857037225 = 190026^2 + 140915^2 .

It is a cyclic number.

It is not a de Polignac number, because 55966917901 - 2³ = 55966917893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55966917907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27983458950 + 27983458951.

It is an arithmetic number, because the mean of its divisors is an integer number (27983458951).

Almost surely, 2^55966917901 is an apocalyptic number.

It is an amenable number.

55966917901 is a deficient number, since it is larger than the sum of its proper divisors (1).

55966917901 is an equidigital number, since it uses as much as digits as its factorization.

55966917901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4592700, while the sum is 58.

The spelling of 55966917901 in words is "fifty-five billion, nine hundred sixty-six million, nine hundred seventeen thousand, nine hundred one".