8540020969402 has 12 divisors (see below), whose sum is σ = 13871217492270. Its totient is φ = 3941548139568.

The previous prime is 8540020969331. The next prime is 8540020969433. The reversal of 8540020969402 is 2049690200458.

It can be written as a sum of positive squares in 3 ways, for example, as 4059817980201 + 4480202989201 = 2014899^2 + 2116649^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12633166777 + ... + 12633167452.

Almost surely, 2^{8540020969402} is an apocalyptic number.

8540020969402 is a deficient number, since it is larger than the sum of its proper divisors (5331196522868).

8540020969402 is a wasteful number, since it uses less digits than its factorization.

8540020969402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25266334257 (or 25266334244 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 49.

The spelling of 8540020969402 in words is "eight trillion, five hundred forty billion, twenty million, nine hundred sixty-nine thousand, four hundred two".