55137136361 has 2 divisors, whose sum is σ = 55137136362. Its totient is φ = 55137136360.

The previous prime is 55137136357. The next prime is 55137136387. The reversal of 55137136361 is 16363173155.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39047736025 + 16089400336 = 197605^2 + 126844^2 .

It is a cyclic number.

It is not a de Polignac number, because 55137136361 - 2² = 55137136357 is a prime.

It is not a weakly prime, because it can be changed into another prime (55137136391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27568568180 + 27568568181.

It is an arithmetic number, because the mean of its divisors is an integer number (27568568181).

Almost surely, 2^55137136361 is an apocalyptic number.

It is an amenable number.

55137136361 is a deficient number, since it is larger than the sum of its proper divisors (1).

55137136361 is an equidigital number, since it uses as much as digits as its factorization.

55137136361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 170100, while the sum is 41.

The spelling of 55137136361 in words is "fifty-five billion, one hundred thirty-seven million, one hundred thirty-six thousand, three hundred sixty-one".