57205041979 has 2 divisors, whose sum is σ = 57205041980. Its totient is φ = 57205041978.

The previous prime is 57205041967. The next prime is 57205041989. The reversal of 57205041979 is 97914050275.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 57205041979 - 2³¹ = 55057558331 is a prime.

It is not a weakly prime, because it can be changed into another prime (57205041989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28602520989 + 28602520990.

It is an arithmetic number, because the mean of its divisors is an integer number (28602520990).

Almost surely, 2^57205041979 is an apocalyptic number.

57205041979 is a deficient number, since it is larger than the sum of its proper divisors (1).

57205041979 is an equidigital number, since it uses as much as digits as its factorization.

57205041979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 793800, while the sum is 49.

The spelling of 57205041979 in words is "fifty-seven billion, two hundred five million, forty-one thousand, nine hundred seventy-nine".