2870159137561 has 32 divisors (see below), whose sum is σ = 3025708851200. Its totient is φ = 2719095350400.

The previous prime is 2870159137543. The next prime is 2870159137567. The reversal of 2870159137561 is 1657319510782.

It is a 3-Lehmer number, since φ(2870159137561) divides (2870159137561-1)³.

It is a cyclic number.

It is a Carmichael number.

It is not a de Polignac number, because 2870159137561 - 2⁹ = 2870159137049 is a prime.

It is a deceptive number, since it divides R_{2870159137560}.

It is not an unprimeable number, because it can be changed into a prime (2870159137567) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 387279946 + ... + 387287356.

It is an arithmetic number, because the mean of its divisors is an integer number (94553401600).

It is a Poulet number, since it divides 2^{2870159137560}-1.

Almost surely, 2^{2870159137561} is an apocalyptic number.

2870159137561 is the 978121-st hex number.

It is an amenable number.

2870159137561 is a deficient number, since it is larger than the sum of its proper divisors (155549713639).

2870159137561 is a wasteful number, since it uses less digits than its factorization.

2870159137561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8645.

The product of its (nonzero) digits is 3175200, while the sum is 55.

The spelling of 2870159137561 in words is "two trillion, eight hundred seventy billion, one hundred fifty-nine million, one hundred thirty-seven thousand, five hundred sixty-one".