6540633545 has 8 divisors (see below), whose sum is σ = 7850618496. Its totient is φ = 5231268016.

The previous prime is 6540633503. The next prime is 6540633553. The reversal of 6540633545 is 5453360456.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6540633545 - 2⁸ = 6540633289 is a prime.

It is a Duffinian number.

It is a Curzon number.

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, 131297 + ... + 174126.

It is an arithmetic number, because the mean of its divisors is an integer number (981327312).

Almost surely, 2^6540633545 is an apocalyptic number.

It is an amenable number.

6540633545 is a deficient number, since it is larger than the sum of its proper divisors (1309984951).

6540633545 is a wasteful number, since it uses less digits than its factorization.

6540633545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309711.

The product of its (nonzero) digits is 648000, while the sum is 41.

The square root of 6540633545 is about 80874.1834270987. The cubic root of 6540633545 is about 1870.1363532172.

The spelling of 6540633545 in words is "six billion, five hundred forty million, six hundred thirty-three thousand, five hundred forty-five".