53774647371391 has 2 divisors, whose sum is σ = 53774647371392. Its totient is φ = 53774647371390.

The previous prime is 53774647371299. The next prime is 53774647371397. The reversal of 53774647371391 is 19317374647735.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53774647371391 - 2¹⁵ = 53774647338623 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53774647371397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26887323685695 + 26887323685696.

It is an arithmetic number, because the mean of its divisors is an integer number (26887323685696).

Almost surely, 2^{53774647371391} is an apocalyptic number.

53774647371391 is a deficient number, since it is larger than the sum of its proper divisors (1).

53774647371391 is an equidigital number, since it uses as much as digits as its factorization.

53774647371391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 280052640, while the sum is 67.

The spelling of 53774647371391 in words is "fifty-three trillion, seven hundred seventy-four billion, six hundred forty-seven million, three hundred seventy-one thousand, three hundred ninety-one".