57428651993 has 2 divisors, whose sum is σ = 57428651994. Its totient is φ = 57428651992.

The previous prime is 57428651981. The next prime is 57428652007. The reversal of 57428651993 is 39915682475.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43863856969 + 13564795024 = 209437^2 + 116468^2 .

It is a cyclic number.

It is not a de Polignac number, because 57428651993 - 2²⁸ = 57160216537 is a prime.

It is not a weakly prime, because it can be changed into another prime (57428651923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28714325996 + 28714325997.

It is an arithmetic number, because the mean of its divisors is an integer number (28714325997).

Almost surely, 2^57428651993 is an apocalyptic number.

It is an amenable number.

57428651993 is a deficient number, since it is larger than the sum of its proper divisors (1).

57428651993 is an equidigital number, since it uses as much as digits as its factorization.

57428651993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16329600, while the sum is 59.

The spelling of 57428651993 in words is "fifty-seven billion, four hundred twenty-eight million, six hundred fifty-one thousand, nine hundred ninety-three".