55776013243 has 2 divisors, whose sum is σ = 55776013244. Its totient is φ = 55776013242.

The previous prime is 55776013231. The next prime is 55776013297. The reversal of 55776013243 is 34231067755.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55776013243 - 2⁵ = 55776013211 is a prime.

It is a super-2 number, since 2×55776013243² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55776013243.

It is not a weakly prime, because it can be changed into another prime (55776013213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27888006621 + 27888006622.

It is an arithmetic number, because the mean of its divisors is an integer number (27888006622).

Almost surely, 2^55776013243 is an apocalyptic number.

55776013243 is a deficient number, since it is larger than the sum of its proper divisors (1).

55776013243 is an equidigital number, since it uses as much as digits as its factorization.

55776013243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 529200, while the sum is 43.

The spelling of 55776013243 in words is "fifty-five billion, seven hundred seventy-six million, thirteen thousand, two hundred forty-three".