2842870847661 has 24 divisors (see below), whose sum is σ = 4525086421856. Its totient is φ = 1708773887520.

The previous prime is 2842870847639. The next prime is 2842870847681. The reversal of 2842870847661 is 1667480782482.

2842870847661 is a `hidden beast` number, since 2 + 8 + 428 + 7 + 0 + 84 + 76 + 61 = 666.

2842870847661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2842870847661 - 2⁵ = 2842870847629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2842870847681) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 282530335 + ... + 282540396.

Almost surely, 2^{2842870847661} is an apocalyptic number.

It is an amenable number.

2842870847661 is a deficient number, since it is larger than the sum of its proper divisors (1682215574195).

2842870847661 is a wasteful number, since it uses less digits than its factorization.

2842870847661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565070793 (or 565070790 counting only the distinct ones).

The product of its (nonzero) digits is 57802752, while the sum is 63.

The spelling of 2842870847661 in words is "two trillion, eight hundred forty-two billion, eight hundred seventy million, eight hundred forty-seven thousand, six hundred sixty-one".