3871177121378 has 48 divisors (see below), whose sum is σ = 6809054396760. Its totient is φ = 1645801242624.

The previous prime is 3871177121353. The next prime is 3871177121389. The reversal of 3871177121378 is 8731217711783.

It can be written as a sum of positive squares in 4 ways, for example, as 3644727719689 + 226449401689 = 1909117^2 + 475867^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6386738 + ... + 6966546.

Almost surely, 2^{3871177121378} is an apocalyptic number.

3871177121378 is a deficient number, since it is larger than the sum of its proper divisors (2937877275382).

3871177121378 is a wasteful number, since it uses less digits than its factorization.

3871177121378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580371 (or 580364 counting only the distinct ones).

The product of its digits is 2765952, while the sum is 56.

The spelling of 3871177121378 in words is "three trillion, eight hundred seventy-one billion, one hundred seventy-seven million, one hundred twenty-one thousand, three hundred seventy-eight".