57121230979 has 2 divisors, whose sum is σ = 57121230980. Its totient is φ = 57121230978.

The previous prime is 57121230973. The next prime is 57121230989. The reversal of 57121230979 is 97903212175.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 57121230979 - 2¹⁹ = 57120706691 is a prime.

It is not a weakly prime, because it can be changed into another prime (57121230973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28560615489 + 28560615490.

It is an arithmetic number, because the mean of its divisors is an integer number (28560615490).

Almost surely, 2^57121230979 is an apocalyptic number.

57121230979 is a deficient number, since it is larger than the sum of its proper divisors (1).

57121230979 is an equidigital number, since it uses as much as digits as its factorization.

57121230979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 238140, while the sum is 46.

The spelling of 57121230979 in words is "fifty-seven billion, one hundred twenty-one million, two hundred thirty thousand, nine hundred seventy-nine".