2857781653876 has 12 divisors (see below), whose sum is σ = 5019572205760. Its totient is φ = 1423618166520.

The previous prime is 2857781653789. The next prime is 2857781653877. The reversal of 2857781653876 is 6783561877582.

It is a junction number, because it is equal to n+sod(n) for n = 2857781653799 and 2857781653808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2857781653877) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1318163886 + ... + 1318166053.

Almost surely, 2^{2857781653876} is an apocalyptic number.

It is an amenable number.

2857781653876 is a deficient number, since it is larger than the sum of its proper divisors (2161790551884).

2857781653876 is a wasteful number, since it uses less digits than its factorization.

2857781653876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2636330214 (or 2636330212 counting only the distinct ones).

The product of its digits is 948326400, while the sum is 73.

The spelling of 2857781653876 in words is "two trillion, eight hundred fifty-seven billion, seven hundred eighty-one million, six hundred fifty-three thousand, eight hundred seventy-six".