1277871613338 has 16 divisors (see below), whose sum is σ = 2690256028320. Its totient is φ = 403538404176.

The previous prime is 1277871613313. The next prime is 1277871613373. The reversal of 1277871613338 is 8333161787721.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5604699945 + ... + 5604700172.

It is an arithmetic number, because the mean of its divisors is an integer number (168141001770).

Almost surely, 2^{1277871613338} is an apocalyptic number.

1277871613338 is an abundant number, since it is smaller than the sum of its proper divisors (1412384414982).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1277871613338 is a wasteful number, since it uses less digits than its factorization.

1277871613338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11209400141.

The product of its digits is 7112448, while the sum is 57.

The spelling of 1277871613338 in words is "one trillion, two hundred seventy-seven billion, eight hundred seventy-one million, six hundred thirteen thousand, three hundred thirty-eight".