6165656540 has 12 divisors (see below), whose sum is σ = 12947878776. Its totient is φ = 2466262608.

The previous prime is 6165656521. The next prime is 6165656561. The reversal of 6165656540 is 456565616.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 6165656491 and 6165656500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 154141394 + ... + 154141433.

It is an arithmetic number, because the mean of its divisors is an integer number (1078989898).

Almost surely, 2^6165656540 is an apocalyptic number.

It is an amenable number.

6165656540 is an abundant number, since it is smaller than the sum of its proper divisors (6782222236).

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

6165656540 is a wasteful number, since it uses less digits than its factorization.

6165656540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308282836 (or 308282834 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 44.

The square root of 6165656540 is about 78521.6947091694. The cubic root of 6165656540 is about 1833.6922220451.

The spelling of 6165656540 in words is "six billion, one hundred sixty-five million, six hundred fifty-six thousand, five hundred forty".