977858505858779 has 2 divisors, whose sum is σ = 977858505858780. Its totient is φ = 977858505858778.

The previous prime is 977858505858757. The next prime is 977858505858803.

977858505858779 is nontrivially palindromic in base 10.

It is a weak prime.

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 977858505858779 - 2⁴⁴ = 960266319814363 is a prime.

It is not a weakly prime, because it can be changed into another prime (977858505852779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 488929252929389 + 488929252929390.

It is an arithmetic number, because the mean of its divisors is an integer number (488929252929390).

Almost surely, 2^{977858505858779} is an apocalyptic number.

977858505858779 is a deficient number, since it is larger than the sum of its proper divisors (1).

977858505858779 is an equidigital number, since it uses as much as digits as its factorization.

977858505858779 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 497871360000, while the sum is 98.

The spelling of 977858505858779 in words is "nine hundred seventy-seven trillion, eight hundred fifty-eight billion, five hundred five million, eight hundred fifty-eight thousand, seven hundred seventy-nine".