55743381619 has 2 divisors, whose sum is σ = 55743381620. Its totient is φ = 55743381618.

The previous prime is 55743381587. The next prime is 55743381679. The reversal of 55743381619 is 91618334755.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55743381619 - 2⁵ = 55743381587 is a prime.

It is a super-2 number, since 2×55743381619² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55743381679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27871690809 + 27871690810.

It is an arithmetic number, because the mean of its divisors is an integer number (27871690810).

Almost surely, 2^55743381619 is an apocalyptic number.

55743381619 is a deficient number, since it is larger than the sum of its proper divisors (1).

55743381619 is an equidigital number, since it uses as much as digits as its factorization.

55743381619 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2721600, while the sum is 52.

The spelling of 55743381619 in words is "fifty-five billion, seven hundred forty-three million, three hundred eighty-one thousand, six hundred nineteen".