2640277764979 has 2 divisors, whose sum is σ = 2640277764980. Its totient is φ = 2640277764978.

The previous prime is 2640277764977. The next prime is 2640277765033. The reversal of 2640277764979 is 9794677720462.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2640277764979 - 2¹ = 2640277764977 is a prime.

Together with 2640277764977, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2640277764977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1320138882489 + 1320138882490.

It is an arithmetic number, because the mean of its divisors is an integer number (1320138882490).

Almost surely, 2^{2640277764979} is an apocalyptic number.

2640277764979 is a deficient number, since it is larger than the sum of its proper divisors (1).

2640277764979 is an equidigital number, since it uses as much as digits as its factorization.

2640277764979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 448084224, while the sum is 70.

The spelling of 2640277764979 in words is "two trillion, six hundred forty billion, two hundred seventy-seven million, seven hundred sixty-four thousand, nine hundred seventy-nine".