3975858077557 has 2 divisors, whose sum is σ = 3975858077558. Its totient is φ = 3975858077556.

The previous prime is 3975858077533. The next prime is 3975858077593. The reversal of 3975858077557 is 7557708585793.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2803729220356 + 1172128857201 = 1674434^2 + 1082649^2 .

It is a cyclic number.

It is not a de Polignac number, because 3975858077557 - 2¹¹ = 3975858075509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3975858077357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1987929038778 + 1987929038779.

It is an arithmetic number, because the mean of its divisors is an integer number (1987929038779).

Almost surely, 2^{3975858077557} is an apocalyptic number.

It is an amenable number.

3975858077557 is a deficient number, since it is larger than the sum of its proper divisors (1).

3975858077557 is an equidigital number, since it uses as much as digits as its factorization.

3975858077557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2593080000, while the sum is 76.

The spelling of 3975858077557 in words is "three trillion, nine hundred seventy-five billion, eight hundred fifty-eight million, seventy-seven thousand, five hundred fifty-seven".