55843937343391 has 2 divisors, whose sum is σ = 55843937343392. Its totient is φ = 55843937343390.

The previous prime is 55843937343349. The next prime is 55843937343401. The reversal of 55843937343391 is 19334373934855.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55843937343391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55843937343091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27921968671695 + 27921968671696.

It is an arithmetic number, because the mean of its divisors is an integer number (27921968671696).

Almost surely, 2^{55843937343391} is an apocalyptic number.

55843937343391 is a deficient number, since it is larger than the sum of its proper divisors (1).

55843937343391 is an equidigital number, since it uses as much as digits as its factorization.

55843937343391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 440899200, while the sum is 67.

The spelling of 55843937343391 in words is "fifty-five trillion, eight hundred forty-three billion, nine hundred thirty-seven million, three hundred forty-three thousand, three hundred ninety-one".