57078861811 has 2 divisors, whose sum is σ = 57078861812. Its totient is φ = 57078861810.

The previous prime is 57078861797. The next prime is 57078861857. The reversal of 57078861811 is 11816887075.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 57078861811 - 2²⁷ = 56944644083 is a prime.

It is not a weakly prime, because it can be changed into another prime (57078861871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28539430905 + 28539430906.

It is an arithmetic number, because the mean of its divisors is an integer number (28539430906).

Almost surely, 2^57078861811 is an apocalyptic number.

57078861811 is a deficient number, since it is larger than the sum of its proper divisors (1).

57078861811 is an equidigital number, since it uses as much as digits as its factorization.

57078861811 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 752640, while the sum is 52.

The spelling of 57078861811 in words is "fifty-seven billion, seventy-eight million, eight hundred sixty-one thousand, eight hundred eleven".