53981558377 has 2 divisors, whose sum is σ = 53981558378. Its totient is φ = 53981558376.

The previous prime is 53981558347. The next prime is 53981558381. The reversal of 53981558377 is 77385518935.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53981410921 + 147456 = 232339^2 + 384^2 .

It is a cyclic number.

It is not a de Polignac number, because 53981558377 - 2¹⁹ = 53981034089 is a prime.

It is not a weakly prime, because it can be changed into another prime (53981558347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26990779188 + 26990779189.

It is an arithmetic number, because the mean of its divisors is an integer number (26990779189).

Almost surely, 2^53981558377 is an apocalyptic number.

It is an amenable number.

53981558377 is a deficient number, since it is larger than the sum of its proper divisors (1).

53981558377 is an equidigital number, since it uses as much as digits as its factorization.

53981558377 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31752000, while the sum is 61.

The spelling of 53981558377 in words is "fifty-three billion, nine hundred eighty-one million, five hundred fifty-eight thousand, three hundred seventy-seven".