874561265617 has 4 divisors (see below), whose sum is σ = 941835209140. Its totient is φ = 807287322096.

The previous prime is 874561265603. The next prime is 874561265623. The reversal of 874561265617 is 716562165478.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 716562165478 = 2 ⋅358281082739.

It can be written as a sum of positive squares in 2 ways, for example, as 111665578896 + 762895686721 = 334164^2 + 873439^2 .

It is a cyclic number.

It is not a de Polignac number, because 874561265617 - 2⁷ = 874561265489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (874561265687) 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, 33636971742 + ... + 33636971767.

It is an arithmetic number, because the mean of its divisors is an integer number (235458802285).

Almost surely, 2^874561265617 is an apocalyptic number.

It is an amenable number.

874561265617 is a deficient number, since it is larger than the sum of its proper divisors (67273943523).

874561265617 is a wasteful number, since it uses less digits than its factorization.

874561265617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67273943522.

The product of its digits is 16934400, while the sum is 58.

The spelling of 874561265617 in words is "eight hundred seventy-four billion, five hundred sixty-one million, two hundred sixty-five thousand, six hundred seventeen".