2677988239961 has 2 divisors, whose sum is σ = 2677988239962. Its totient is φ = 2677988239960.

The previous prime is 2677988239907. The next prime is 2677988239963. The reversal of 2677988239961 is 1699328897762.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2677988239936 + 25 = 1636456^2 + 5^2 .

It is a cyclic number.

It is not a de Polignac number, because 2677988239961 - 2⁶ = 2677988239897 is a prime.

Together with 2677988239963, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2677988239963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1338994119980 + 1338994119981.

It is an arithmetic number, because the mean of its divisors is an integer number (1338994119981).

Almost surely, 2^{2677988239961} is an apocalyptic number.

It is an amenable number.

2677988239961 is a deficient number, since it is larger than the sum of its proper divisors (1).

2677988239961 is an equidigital number, since it uses as much as digits as its factorization.

2677988239961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 987614208, while the sum is 77.

The spelling of 2677988239961 in words is "two trillion, six hundred seventy-seven billion, nine hundred eighty-eight million, two hundred thirty-nine thousand, nine hundred sixty-one".