8520949020009 has 16 divisors (see below), whose sum is σ = 11594667196800. Its totient is φ = 5564950984320.

The previous prime is 8520949019977. The next prime is 8520949020013. The reversal of 8520949020009 is 9000209490258.

It is a happy number.

It is not a de Polignac number, because 8520949020009 - 2⁵ = 8520949019977 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8520949020009.

It is not an unprimeable number, because it can be changed into a prime (8520949020509) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 127369284 + ... + 127436165.

It is an arithmetic number, because the mean of its divisors is an integer number (724666699800).

Almost surely, 2^{8520949020009} is an apocalyptic number.

It is an amenable number.

8520949020009 is a deficient number, since it is larger than the sum of its proper divisors (3073718176791).

8520949020009 is a wasteful number, since it uses less digits than its factorization.

8520949020009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254805680.

The product of its (nonzero) digits is 466560, while the sum is 48.

The spelling of 8520949020009 in words is "eight trillion, five hundred twenty billion, nine hundred forty-nine million, twenty thousand, nine".