6993161540 has 24 divisors (see below), whose sum is σ = 14692601112. Its totient is φ = 2795938560.

The previous prime is 6993161521. The next prime is 6993161551. The reversal of 6993161540 is 451613996.

It can be written as a sum of positive squares in 4 ways, for example, as 438316096 + 6554845444 = 20936^2 + 80962^2 .

It is a junction number, because it is equal to n+sod(n) for n = 6993161491 and 6993161500.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39071 + ... + 124550.

It is an arithmetic number, because the mean of its divisors is an integer number (612191713).

Almost surely, 2^6993161540 is an apocalyptic number.

It is an amenable number.

6993161540 is an abundant number, since it is smaller than the sum of its proper divisors (7699439572).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6993161540 is a wasteful number, since it uses less digits than its factorization.

6993161540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165767 (or 165765 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 44.

The square root of 6993161540 is about 83625.1250522234. The cubic root of 6993161540 is about 1912.3080510789.

The spelling of 6993161540 in words is "six billion, nine hundred ninety-three million, one hundred sixty-one thousand, five hundred forty".