55266132989 has 2 divisors, whose sum is σ = 55266132990. Its totient is φ = 55266132988.

The previous prime is 55266132923. The next prime is 55266133081. The reversal of 55266132989 is 98923166255.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54676468900 + 589664089 = 233830^2 + 24283^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55266132989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55266135989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27633066494 + 27633066495.

It is an arithmetic number, because the mean of its divisors is an integer number (27633066495).

Almost surely, 2^55266132989 is an apocalyptic number.

It is an amenable number.

55266132989 is a deficient number, since it is larger than the sum of its proper divisors (1).

55266132989 is an equidigital number, since it uses as much as digits as its factorization.

55266132989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6998400, while the sum is 56.

The spelling of 55266132989 in words is "fifty-five billion, two hundred sixty-six million, one hundred thirty-two thousand, nine hundred eighty-nine".