2977916189509 has 2 divisors, whose sum is σ = 2977916189510. Its totient is φ = 2977916189508.

The previous prime is 2977916189477. The next prime is 2977916189531. The reversal of 2977916189509 is 9059816197792.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2634625661409 + 343290528100 = 1623153^2 + 585910^2 .

It is a cyclic number.

It is not a de Polignac number, because 2977916189509 - 2⁵ = 2977916189477 is a prime.

It is a super-2 number, since 2×2977916189509² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2977916189579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1488958094754 + 1488958094755.

It is an arithmetic number, because the mean of its divisors is an integer number (1488958094755).

Almost surely, 2^{2977916189509} is an apocalyptic number.

It is an amenable number.

2977916189509 is a deficient number, since it is larger than the sum of its proper divisors (1).

2977916189509 is an equidigital number, since it uses as much as digits as its factorization.

2977916189509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 154314720, while the sum is 73.

The spelling of 2977916189509 in words is "two trillion, nine hundred seventy-seven billion, nine hundred sixteen million, one hundred eighty-nine thousand, five hundred nine".