872520359261 has 16 divisors (see below), whose sum is σ = 897004324608. Its totient is φ = 848295936000.

The previous prime is 872520359197. The next prime is 872520359303. The reversal of 872520359261 is 162953025278.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 872520359261 - 2⁶ = 872520359197 is a prime.

It is a super-2 number, since 2×872520359261² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (872520359461) 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 15 ways as a sum of consecutive naturals, for example, 6198461 + ... + 6337661.

It is an arithmetic number, because the mean of its divisors is an integer number (56062770288).

Almost surely, 2^872520359261 is an apocalyptic number.

It is an amenable number.

872520359261 is a deficient number, since it is larger than the sum of its proper divisors (24483965347).

872520359261 is a wasteful number, since it uses less digits than its factorization.

872520359261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140132.

The product of its (nonzero) digits is 1814400, while the sum is 50.

The spelling of 872520359261 in words is "eight hundred seventy-two billion, five hundred twenty million, three hundred fifty-nine thousand, two hundred sixty-one".