2772039978647 has 2 divisors, whose sum is σ = 2772039978648. Its totient is φ = 2772039978646.

The previous prime is 2772039978637. The next prime is 2772039978737. The reversal of 2772039978647 is 7468799302772.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2772039978647 - 2⁸ = 2772039978391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2772039978637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1386019989323 + 1386019989324.

It is an arithmetic number, because the mean of its divisors is an integer number (1386019989324).

Almost surely, 2^{2772039978647} is an apocalyptic number.

2772039978647 is a deficient number, since it is larger than the sum of its proper divisors (1).

2772039978647 is an equidigital number, since it uses as much as digits as its factorization.

2772039978647 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 448084224, while the sum is 71.

The spelling of 2772039978647 in words is "two trillion, seven hundred seventy-two billion, thirty-nine million, nine hundred seventy-eight thousand, six hundred forty-seven".