9870526643 has 4 divisors (see below), whose sum is σ = 9887874360. Its totient is φ = 9853178928.

The previous prime is 9870526639. The next prime is 9870526669. The reversal of 9870526643 is 3466250789.

It is a happy number.

9870526643 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3466250789 = 10651 ⋅325439.

It is a cyclic number.

It is not a de Polignac number, because 9870526643 - 2² = 9870526639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9870526591 and 9870526600.

It is not an unprimeable number, because it can be changed into a prime (9876526643) 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, 8673005 + ... + 8674142.

It is an arithmetic number, because the mean of its divisors is an integer number (2471968590).

Almost surely, 2^9870526643 is an apocalyptic number.

9870526643 is a deficient number, since it is larger than the sum of its proper divisors (17347717).

9870526643 is a wasteful number, since it uses less digits than its factorization.

9870526643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17347716.

The product of its (nonzero) digits is 2177280, while the sum is 50.

The square root of 9870526643 is about 99350.5241204091. The cubic root of 9870526643 is about 2145.0962074348.

The spelling of 9870526643 in words is "nine billion, eight hundred seventy million, five hundred twenty-six thousand, six hundred forty-three".