9872657551 has 8 divisors (see below), whose sum is σ = 9913924800. Its totient is φ = 9831431328.

The previous prime is 9872657539. The next prime is 9872657573. The reversal of 9872657551 is 1557562789.

9872657551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9872657551 - 2¹⁷ = 9872526479 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9872657492 and 9872657501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9872657591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 530730 + ... + 549016.

It is an arithmetic number, because the mean of its divisors is an integer number (1239240600).

Almost surely, 2^9872657551 is an apocalyptic number.

9872657551 is a deficient number, since it is larger than the sum of its proper divisors (41267249).

9872657551 is a wasteful number, since it uses less digits than its factorization.

9872657551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20513.

The product of its digits is 5292000, while the sum is 55.

The square root of 9872657551 is about 99361.2477327051. The cubic root of 9872657551 is about 2145.2505617036.

The spelling of 9872657551 in words is "nine billion, eight hundred seventy-two million, six hundred fifty-seven thousand, five hundred fifty-one".