57724912381 has 2 divisors, whose sum is σ = 57724912382. Its totient is φ = 57724912380.

The previous prime is 57724912361. The next prime is 57724912387. The reversal of 57724912381 is 18321942775.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39461822500 + 18263089881 = 198650^2 + 135141^2 .

It is a cyclic number.

It is not a de Polignac number, because 57724912381 - 2²⁵ = 57691357949 is a prime.

It is a super-2 number, since 2×57724912381² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57724912387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28862456190 + 28862456191.

It is an arithmetic number, because the mean of its divisors is an integer number (28862456191).

Almost surely, 2^57724912381 is an apocalyptic number.

It is an amenable number.

57724912381 is a deficient number, since it is larger than the sum of its proper divisors (1).

57724912381 is an equidigital number, since it uses as much as digits as its factorization.

57724912381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 846720, while the sum is 49.

The spelling of 57724912381 in words is "fifty-seven billion, seven hundred twenty-four million, nine hundred twelve thousand, three hundred eighty-one".