1277879968911 has 256 divisors, whose sum is σ = 2355691520000. Its totient is φ = 609851773440.

The previous prime is 1277879968847. The next prime is 1277879968931. The reversal of 1277879968911 is 1198699787721.

It is not a de Polignac number, because 1277879968911 - 2⁶ = 1277879968847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1277879968931) by changing a digit.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 622444161 + ... + 622446213.

It is an arithmetic number, because the mean of its divisors is an integer number (9201920000).

Almost surely, 2^{1277879968911} is an apocalyptic number.

1277879968911 is a deficient number, since it is larger than the sum of its proper divisors (1077811551089).

1277879968911 is a wasteful number, since it uses less digits than its factorization.

1277879968911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2219 (or 2205 counting only the distinct ones).

The product of its digits is 192036096, while the sum is 75.

The spelling of 1277879968911 in words is "one trillion, two hundred seventy-seven billion, eight hundred seventy-nine million, nine hundred sixty-eight thousand, nine hundred eleven".